^^^ I'm not so sure about the vice-versa.
You don't hear Linds saying the same stuff about Stevie in interviews that she says about him. Not to belabor the point, but I think Lindsey's time away from the band gave him a chance to process and come to terms with Stevie-ness; I'm not certain that she ever gave herself the chance to do the same and that she finds herself falling back into hostilities that he has since dealt with and moved on.
Sure he's torn. He has his vision and wants to remain true to it, and who doesn't want their vision validated by wide-spread acceptance? And OBVIOUSLY he likes being on stage!
Generally speaking, I agree with your reasoning as to why he made Law & Order. Can you imagine the level of competition between those two in the early 80's? Had it been successful, it also would have validated his vision which he had already taken a lot of crap for after the "failure" of Tusk.
My point is that if he is so driven by commercial success, why in the hell would he have ever made another solo album (let alone 3) after the dismal commercial failure of L&O?