The corporations are corrupt. They aren't basing decisions on profit motive anymore.
Er... what? They surely are.
Corporate decision makers don't make money from profit, they make money from stock prices. Big finance can easily manipulate stock prices to make anyone richer. They'll make you rich if you inject Democratic political points into everything.
Er, no.
Stock prices are profits...
of a sort. Shareholders, remember, are the non plus ultra of "capitalists": it's
their capital. Companies operate for the benefit of shareholders, and shareholders mostly don't really give a monkeys how the money drops into their pockets as long as it does. A share price rise is just another way to make money. Imaging that this is somehow a corruption of capitalism is kind of weird. The whole point of a stock market is to move your money around to profitable enterprises.
Secondly, companies are not interested in liberalism or the Democratic Party, per se, they're interested in making money. The people who have the money and that they are most interested in are the middle classes. So if they want a selling point, they take a look at what the middle classes think.
Put it this way: for a topic like gay marriage, this is supported by about 70-80% by people with college educations compared to ~50% without college educations. (Even by party, around half of Republicans are fine with it, because plenty of Republicans are quite socially liberal.) So not only do a hefty majority of Americans believe in gay rights, but that is particularly pronounced in Americans with lots of disposable income. This makes it a no-brainer for the average corporation when currying favour with customers. You can look at other issues like the environment, and again you see about 70% of Americans who think it's a significant issue.
Therefore corporations are appealing to the public as a whole, not spouting Democratic talking points. The issue is that the Republican Party is out of step with the country as a whole because it favours its more fervent, extreme, activist half in policy positions.