The PS5 will also have the option to swap out SSD cards as well as upgrade to larger ones. Sony also mentioned that you could download portions of the game that you only want to play - such as online and offline or both to conserve space. So, i imagine that depends on the type of gamer you are at that moment.
hopefully with Sony’s push on certified/approved SSDs manufactures will produce more and bring down their price...looking at some earlier and some are hella pricey. I hope they have another event or accessory deep dive into what’s compatible so I may purchase one in advance or save up for one, that’s worth it.