Do you assume market manipulation to be capitalism? That would be the first mistake, corporatism is the bastard stepchild of economics, it engages in power plays, deception, and market manipulation to get the desired numbers. This involves politicians, dumb laws to eliminate competition by pricing them out of the market(or at least limiting their growth), favorable laws to insure that a financial channel remains open to a power player(like Buffet fighting the oil pipeline because his trains move a lot of oil at a premium). Capitalism depends on two things, the "free hand" which requires consumers and suppliers to trade unmolested by outside forces, the other thing it requires is an ethical exchange neither of the two can happen in a manipulated market(i.e. overregulation, overtaxed, money manipulation, fraud).
It's not so simple, buying bonds funds the very mechanism that allows corporatism to flourish. Buying bonds directly pays into the programs that the bonds are tied to, so if one doesn't like fiat currency already then they are funding it with T-bills, if one doesn't like social programs then they would be funding it with. Bonds, like stocks, are funding mechanisms and the government is even less accountable at this time than corporations, no thank you but I would rather starve the beast.
Again, and this is the problem, as long as they can fund expansion they will expand. The more they expand the more stupidity they are capable of. As much as I hate to say this we are on this course until either we get a very good representation or the fiat system crashes.