Yep, discussions of capitalism as contrasted with socialism are largely pointless as all western countries operate different flavors of mixed economies. Keynes won. You have to have both— if you stray too far in either direction your economy topples.
But accepting "Have government involved in the economy, not too much. Mostly markets" means you have to actually know about the specific industry and surrounding economic factors and that makes discussions boring. It's way more fun to have Cage Match: Capitalism vs Socialism, this Saturday on pay-per-view.
I would hardly describe any of the governments of Canada or the UK in the past, what, 50(?) or so years as being socialist...