Anecdotally — I have a lot of friends and colleagues in the music industry — I wouldn’t say Pro Tools is more prestigious. It seems pretty split on people’s preferences and old habits die hard, but a LOT of top composers and producers use Logic.
Avid has pissed off a lot of users by being greedy while not providing a reliable product.
PT was pretty much the industry standard ten years ago, but since then there's been a lot of churn to other DAWs - primarily Logic and Cubase, although a lot of dance/rap newcomers use Live and FL Studio.
Bottom line is the resources Apple needs to devote to its media products are barely a rounding error, and the rewards are increased traction with professionals and a few extra hardware sales, especially at the high end.
It's a conservative strategy, and not a terrible one.
The disappointing part is that it could have been part of a consistent product plan ten years ago. Now there's always the worry that Apple will lose interest again for another 5-10 years.
This is just my random thoughts, but it would seem like Apple learned a lesson with the Mac Pro that they're not looking to repeat. The other advantage of creating high-end tools in-house is that it moves hardware, which remains a huge part of Apple's bottom line.
