The blockchain is already 15 GiB. Bitcoin can't replace credit cards if we don't solve this problem.
I've always just wondered why it can't be compressed at the very least.
1080i edition of Avatar movie directors cut are larger. The movie is maybe 2h30m long. Blockchain is 5+ years "long". As block size grows so grows the tx fee to keep it under control or sponsor larger storage by the tx fee. Disk space are not real problem. Even my 12 years old desktop computer with 12 years old IBM GXP 120GB harddrives have no problem storing the blockchain among other stuff and games. More modern computer will have zero problems with full node for next 10 years even when tx volume increases by orders of magnitude.