Yes, this has been the plan since the Andrew House era. AAA are getting too expensive to be made, so need more revenue by expanding in new markets like GaaS, PC, mobile or movie and tv shows adaptations.
Sony already did PC games in the '80s for MS, for the '90s with (also in rival consoles) Psygnosis, Sony Imagesoft (a.k.a CSG Imagesoft) or SOE, and want to grow this area. Same goes with mobile, Sony did mobile games since the 00's (I even worked in one of them, the one about the first Lord of the Ring movie). It isn't something new.