> Why should I care about corruption inside companies? Corrupted companies are less effective, they will eventually die.

Assuming that's true, "eventually die" doesn't sound great for the vulnerable workers of the company, who have lost out on wages due to said corruption and are now unemployed.

> you have no solution for corrupted officials

Sure I do. There's the media, the judicial system, and the ballot box.

> in free market, if you have capital and don't create any goods, but only spend it eventually you have less capital

That's not a rebuttal of what I said, and it's not necessarily correct either. You can, for example, buy land and rent it out.