It is an interesting moral connundrum I do agree, Bill, tho' I'd be pleased if you'd be a little softer when smacking me up the side of the head

. I was just responding to the part of the diatribe that resonated with me as being one of the most common misconceptions of the modern age.
On-topic, all that I can say is that, for me, the morality of how wealth is obtained has a very great bearing on the matter. That's not hatred, that's a judgement based upon my own principles.
Also, you misunderstood my thrust going by the tail end of your post. The common phrase (seemingly not common in America) that no-one gets rich by working for a living derives from the fact that,
mostly, great wealth comes from the exploitation of others and that is something that tweaks the Daily Mail gene (not that there's a great deal I can do about it). So, whilst I don't quite hold drug dealers and investment bankers as morally equivalent, it's not far off.
I actually thought I was being gentle. Sorry!
You might note that this is yet another of my many hot buttons. We humans have such an interesting love-hate relationship with money, power, and those who have these things. We think money is good; until it is bad. We think power is needed; until it is too much. We think people should strive to succeed, which brings with it (in a capitalist society) money and perhaps power; until they achieve it.
And everyone, it seems, has a different idea about what 'too much is'. Most arguments about economic class and wealth eventually devolve into the basic concept (as stated even by President Obama, but he's just like the rest of us) that there is a number, call it "X", which represents an amount of money which is 'too much'. The implication of 'too much' is that it is a) bad and b) should be taken away. We just seem to have different ideas about the value of X.
We also and coincidentally tend to place moral value upon how money comes into the possession of individuals. Although you mentioned criminal income, I would set that aside and talk only about legal income. The moral implications are several. Among them, the concept that there are things which are legal to do, but which we ought not do because they are immoral. The "junk bond kings" of the 1980's come to mind, or the mortgage brokers of recent years. There is also a concept that one who receives their money from streams that do not involve their own effort (such as through invention, discovery, hard work, and so on) are immoral in an of themselves. That daddy worked himself into an early grave to provide for his children does not change the fact that to many of us, those children are now bad people because they did not come by their wealth the way daddy did. Of course, there are sub-rules here as well, it gets very complicated. For example, when a poor person wins the lottery, we say "Good for him!" even though he did nothing to earn it but buy a lottery ticket. We seem to have a real problem with the notion of children born into privilege, even though many of us strive to leave our children in as good financial position as we are able to manage ourselves.
We often call it class hatred, or class envy, but neither one of those words really adequately describes how many of us apparently feel about those who have wealth or power out of proportion with what we think they should have, given the amount of money / power they have and how they came to have it. It is more of a sense of being offended or affronted in general.
And I typically have no problem (although I like to argue) with people who have a lower threshold than I do with regard to wealth / power and how a given person came to acquire it. I do tend to have more of a problem when people attempt or suggest that we fit action to words and, well, take it away from them if we think they ought not to have it.
With regard to the most recent issues confronting it as a society, I note an even more odd conundrum that perhaps few else seem to be noticing, and that is this: We seem to be objecting to the wealth and power of the 1% and suggesting that something ought to be done about it (that is, take it away, through taxation, penalties, or dragging them into the street and beating them with shoes, apparently), but at the same time, nearly all of the people suggesting that they be stripped of their wealth over X agree also that IT WILL NOT FIX THE PROBLEM. If it won't make anything better, then it seems to me that it's just a stupid vent of emotion with no point whatsoever. Is that not odd?
It's like the freaking French Revolution. "Kill all the nobles! Will that lower the price of bread? No, it won't! We don't care! Kill all the nobles!" Oh, I see. Well good luck storming the castle.