It may be a good cat warmer in that case :P
I have my PS4 Pro right next to my PS3, right next to the VR box for the PS4. There's not much room on that shelf in my entertainment unit. I might have to build something new to accommodate everything and handle the absolute warren of cables behind the cabinets - my entertainment unit looks like a server cabinet gone wrong - and the PS5 would look ludicrously out of place - but... I'm a tragic for the PlayStation exclusives at the moment - even with a powerful gaming PC...
You could replace your PS4 Pro. PS5 should run all PS4 games, and run most of them better. (They do add a caveat that some corner cases there may be some issues, but not clear what that means...)
I'll be doing that - most likely on launch - have some "gift cards" from some flights that were cancelled due to, as Steve puts it "human malware".
Just waiting on local pricing and orders to start - I'll pay the early adopter tax, provided the unit has support for the PSVR gear I already have - otherwise, its a hard sell to dump my PS4 pro.