My take: end-users don't care very much about the license, and even for technical users, the value of an 'open' license is overstated. I simply cannot fix bugs in, say, GCC, and it would also be pretty hard for me to pay someone to do so, despite this project being pretty much the poster child (other than, of course, Linux, but that is not exactly a typical case...) for the GPL.

Corporate users want a way out of an abusive or impossible vendor relationship: source escrow can fix that as well as the GPL can (which is to say: not exactly entirely, but, close, I guess?).

Regular users want... things just to work, and someone to shout at if it doesn't. The license of the underlying source code is pretty much irrelevant for that. There are at least three levels of support/indirection prior to that making any difference.