Pretty sure Bend Studios' newest project only got greenlit like back in 2022(?), so you're not going to see jack shit for a long time.
It's a State of Play, you're not going to see the next big titles from SIE there.
Because PS3 is not backward compatible, it's simple as that really. Lot of programming work and other miscellaneous backend stuff that I don't have the slightest idea how that works would have to be done.
It would also require a lot more asset creation and a bunch of other things to modernize these titles.
It's not a guarantee that all this extra work from talent would lead to any increased profit.