> You will not win the same number of blocks per year, and fundamentally can’t, unless you have the same share of the overall mining hashpower that entire time.

But, unless difficulty changes, the blockrate changes.

If you keep the entire existing network, and say I'm 0.002% of the hashpower; I'll win 1 block per year, losing 99.998% of blocks.

If the whole rest of the network goes away except me, it'll take me 1 year to mine a block. I lose 0% of blocks.

But in either case, I mine one block per year.