Two sports games selling well would make EA and 2K to put non sports games on switch?
If these two games sell well, my assumption will be that next years sports game is a go, nothing more.
Maybe it wouldn't directly provide assurance that other game genres would sell well, but if I'm EA or 2K it would certainly improve my confidence that there is a healthy base for non-Nintendo (read: kiddie) games and therefore it's much less of a risk to budget for some other viable ports.
Having said that, I wouldn't bet on it.