It's not about the storage it's about the bandwidth and infrastructures. If you have 4 gigabytes blocks only few percentage of individuals would be able to run a node. Look at ethereum network. Today you can run a bitcoin node on your phone because we have small capped blocks.
Discussion
Never heard of a full node on a phone. Can you name one?
Monero is far away from 4 GB Blocks. Let's see what solution will come up, if monero hits 4 GB blocksize.
What a great problem to have. Monero is used so much that it is hitting 4 GB blocks 😂
Don't think we'll see that anytime soon if ever...