250,000 Taxation

I am very confused, just listend to the radio, the commentator says that a lot of small businesses will go under when this tax hits again. I used to have several restaurants and other businesses over a period of 30 years, and I am afraid that I must have done something really wrong, because after all the rite offs, the inventory, the wages and insurances I had hardly made a dime. So I would like to see the small business owner who makes over 250,000.00 in income by himself. I somehow think that if a owner makes that kind of money it is not a small business, and is not about to go under because he has to pay 5% more tax, which by the way is the same amount he had to pay under Clinton, and if I remember right we did have a great economy then. So can someone explain to me whats going on?