Not only smart, but necessary as we are in 2016. I want games to work like movies, tv shows and music, god dammit!
Exclusives don't sell consoles anymore. 3rd party games are the king of the hill now.
I don't see PC versions of Bloodborne, Infamous, Killzone having a big impact on console sales and if so...who cares. Sony will sell more games. I was addressing this idea in many Nintendoomed threads: What's the point of selling 12 mio. WiiUs and 8 mio. copies of MK8 if Nintendo could sell 20+ mio. copies of MK8 across all plattforms?
And let's not forget...Sony is also in the movie business, so a subscription service that runs on various devices would be a clever way of earning some extra cash.