You can simultaneously have corporatism and socialism. When you take money from one group to pay for another group, that's socialism. When you have public schooling, public parks, public healthcare, etc, those things are socialized. Everyone is forced to pay for those things, even if they don't use them, to provide for other people. And when corporations buy the government, that's corporatism. Both of these things can coexist. And they do in the US. We're not full-blown socialist, but there's a ton of it going on. Same with corporatism.