I wonder what would happen with bigger blocks besides making the blockchain use more disk space. We have BCH and BSV to compare, but not in BTC's scale, I believe.
Bigger blocks means more transactions per block and at a constant rate of 6 blocks/hr that means the network can handle more TPS before fees rise. As long as the mempool remains relatively empty, fees will be low.
Read the first page of the Bitcoin whitepaper: https://www.bitcoin.com/bitcoin.pdf.
It's a protest against fees and intermediaries. Now we see BTC claim to be Bitcoin, but it is crippled by high fees and custodial intermediaries.
If only there was a low fee way of doing bitcoin transactions without custodial intermediaries...