To be honest, the "many" might be wrong. I also only really know of Google and the company that I work at, which is a larger non-IT company.

I sort of just assume that it would be common, because in these larger companies no one cares enough about individual IT projects to generally accept the risk of a license violation.
It's also just a pain in the ass for such a larger company to keep track of all the different licenses that end up in one product, so completely banning the most dangerous licenses may simply be a sane business decision.