>>127416539
I'd say there are multiple levels of "giving up".
There are the guys that give up completely after a very short time and don't touch their guitar again, which is clearly the majority. But I assume anon wouldn't count those as guitar players (anymore).
There is also a large chunk of guitarists that give up early on learning or improving, but will continue forever with regularly noodling the same 2 songs and 3 riffs they learned during their first months.