No, it was already too late... honestly, once you get used to the PS4 (I can't talk for the XB1) there is no going back... you may even wonder how you played much of anything on the PS360 (honeslty, I had my PS3 only for media streaming + the excluaives, until I got the PS4 I was mainly a PC gamer... but my PC is a little old, so right now the PS4 is about as powerful as it, a first for a console!)
Anyway, games that ship below 1080p + decent frame rate are basically shipping "broken" at least you don't get an optimal experience out of the versions you get on weaker consoles.... same if you try to run a PC games on a computer that cannot handle it, the game runs, but when you get the chance to upgrade and try it again on proper hardware it's more enjoyable.
Now if you still enjoy your old console as is, all the better for you, it makes you a cheap date and you can save tons of money by mpt upgrading until the price drop... my guess is it may wait until next E3 for the PS4... XB1 may drop right after the holiday if sales are not satisfactory for MS!
I think an Xbox One Point Five that would fix the specs of the machine would be amazing and I may even buy one if they released it soon!