Doesn't it make financial sense to keep making PS4 games?

PS4 install base is huge. PS5 games don't look THAT much better than PS4 games. Stick a SSD into your PS4 and you solve the loading times. I don't see why game studios wouldn't be making major titles for PS4 until like 2030. Why leave so much money on the table? Especially with PS5 prices going up...