Bro what? Make online free? That makes absolutely no sense, they have consistently had 45-50m subs since covid, that's bare minimum $3 billion a year, likely more like $4-5b a year. Your hedge against them losing $85m on a single first party title is to...lose $4-5b a year?? The whole point is Sony should hedge in ways that don't lose them too much money.GamePass was never ever a threat, it's been stagnant and unprofitable for almost 5 years. And a lot of those subs were $1 or microsoft rewards. The vast majority of people simply aren't interested in paying $17 a month just to play old games and mediocre 1st party. Just like how no one is interested in a crappy console no matter how cheap it is which is why the Series S has been retailing for $150 for weeks and still selling horribly.
The importance of value proposition in the gaming space has always been overblown. And that's only because of the constant GamePass propaganda that you mentioned. All of those shills and astroturfers haven't made a dent.
The best way Sony could've hedged against it was by making online free, casuals will see infinitely more value in that than they ever would in GamePass. But we all know that Sony would never do that, so their 2nd best option would be to just do nothing. Let Microsoft continue to burn money and make themselves less and less appealing, yes they can burn money for a long time, but not forever. Even more so now that they've spent $80 billion on publishers. Satya and shareholders are gonna want to see results eventually.
Also anything to deal with prices is easily copied by MS as they have no problem losing money to achieve their goals. See how quickly they raised console prices after Sony raised prices, and how quickly they raised gamepass prices after Sony raised PS+ prices? The instant PS makes PS+ free the day after Xbox will make it free on their end. They can afford it and Sony can't.