Whether you're streaming a ps5 game or a ps1 game, it isn't going to drastically change the bandwidth necessary for a good experience. More than anything latency is what you want to keep down for a good experience and that has little to do with bandwidth.
Sure, if they open the streams up to 4k then bandwidth will be more of a concern, but considering remote play is capped at 1080p when streaming locally from your own ps5 I don't see that happening in the near term. Of course this is considering you live somewhere in the US that you can at least get a decent cable (or the fiber dream) internet connection, so YMMV.
Whether you're streaming a ps5 game or a ps1 game, it isn't going to drastically change the bandwidth necessary for a good experience. More than anything latency is what you want to keep down for a good experience and that has little to do with bandwidth.
Sure, if they open the streams up to 4k then bandwidth will be more of a concern, but considering remote play is capped at 1080p when streaming locally from your own ps5 I don't see that happening in the near term. Of course this is considering you live somewhere in the US that you can at least get a decent cable (or the fiber dream) internet connection, so YMMV.