Paul Sztorc wrote an article called Measuring Decentralization in 2015 that explains why small, cheap nodes are essential to decentralization. Increasing the blocksize only works on a layer two, because you don’t have to store the entire blockchain.

https://www.truthcoin.info/blog/measuring-decentralization/

Scaling Bitcoin with sidechains:

https://www.truthcoin.info/blog/thunder/