If you adjust the salary for new-hires, you'll have to also adjust every employees salary otherwise it becomes unfair to existing employees. Lets give a raise to everyone in America to match inflation isn't really a tenable strategy. Most small businesses would simply go under if they had to do that for 50-100 people. I believe this is the unfortunate reality of many businesses in the US which are struggling already.
If you can't pay your employees market wage, why do you deserve to stay in business? Do restaurants ever expect to underpay their tomato suppliers using the same logic?
You also need to be making a profit though, or at least break even after all costs are accounted for. Otherwise you will run out of money. In our current economic model, a company that is too inefficient to compete in the market does not deserve to stay in business.
Maybe it should be. Even if only to match inflation. Salary actually decreases over time if you don't receive raises. $100k/y today might be equal to $110k/y next year.