What do they mean by "Social Justice?" What is their fair share of the pie? Should everyone pay exactly the same percentage of their income to taxes?
If Tom and Joe pay ten percent of their income, Tom making $100,000 per year pays $10,000 and Joe making $10,000 a year pays $1,000; Tom pays ten times more than Joe and that's really what it's about isn't it? It's not about how much more Tom earns than Joe, it's the humiliation and embarrassment of Tom paying ten times more taxes than Joe.
In the world of finance, reputations are at stake. One is measured by the balance sheet and if any expenses can be successfully avoided, than one might be a suitable business client, otherwise, you will be frozen out of the boardroom and off the golf course.