Well they just caved on the 128G storage last year (2022 [0]), so it seems premature to think that might happen. The last bump in base RAM was 2017 [1] and before that 2012, so one might think that would increase soonish. However, the shift from Intel to Apple silicon changed the nature of RAM in the machines. Its too soon to tell what a base-level upgrade would look like.

0. https://everymac.com/systems/apple/macbook-air/specs/macbook...

1. https://everymac.com/systems/apple/macbook-air/specs/macbook...