As a Sony fan I don't really care if games are multiplatform at the end of the day, but it really doesn't seem like a great business decision after we've watched MS completely destroy their ecosystem over the last decade. I think a lot of people around here confuse objective takes for console warring and just make it a Sony vs MS thing when it comes to these decisions rather than looking at the whole picture.
If Sony went day and date on PC I'd certainly consider going back to PC expecially with things like Bazzite and the MS Xbox full screen experience coming along. Not having exclusives is a sure way to destroy your ecosystem, that's why most of us are against it. You need brand differentiators to market these things.