Yes?
I don't see MS going around making third parties sign 'no ps now' clauses but if they do, I'd call them out on it aswell. Its a scummy move and I really don't care about the business side of it. It impacts me as a consumer, I'm not a shareholder and I couldn't give a rats ass if they go belly up tommorow because there are more than enough alternatives out there.
Same with MS, if they decide to go off the reservation, I'll just cancel my sub and go elsewhere, thats the beauty of subs, I'm not tethered to them in any way.
I'd rather playstation invest in their own service instead of trying to cockblock MS. Start by putting up games day 1. Introduce a new, more expensive tier to offset losses. Even MS without any AAA first party games managed to get over 20 million subs. Looks like Sony is taking notice if they try to block individual games from entering the service.