Does that mean the mining network is much smaller?
Discussion
Not comparable. Totally different assumptions. Monero means everybody can mine, like Satoshi said 1 CPU, 1 vote.
If monero grows will it change and need something like GPUs and ASICs later?
No. The RandomX algo is designed, so CPUs are already the best "ASICs".
I'm intrigued. I have only free electricity. Seems like a good way to use up what we don't usually. I only have an m1 macbook.