That's 28% Of their Gross income. Are you saying that isn't enough?
I can guarantee you that Your average mom & pop business would be bankrupt if it paid 28% of it's Gross Revenues in Taxes.
Note: It would also be bankrupt if it's mom & pop owners didn't understand the difference between Gross and Net Income.
P.S. Oh yeah, I almost forgot, the net income will get taxed again when it is distributed to the company's owners as Dividends Income. (Which is why your average mom & pop business wouldn't be caught dead as a C-Corporation.)