With the guys at the very top perhaps. But I doubt they'd last very long if they kept losing their clients' money. And if you are making your clients £10 million a year for example, then it stands to reason that you should get a million or so of that yourself. If you are teaching kids in a school, why should you get a million quid for it? I'm not suggesting that any teachers are saying that they should, but if a banker is making his clients £10 million a year, why should he only be paid £30K a year for it?
Surely it stands to reason that the more money you make for your company, the more money they pay you?
Also they pay a lot of tax (certainly it funded a lot of the boom under Labour). However this is no good if every once a while you take the financial system to the brink of collapse leading to the worst recession since the great depression.
Communism had it's go and failed so capitalism doesn't need scrapping. However, it does need reforming.