If it really becomes difficult to adjust these possible 7%, can we expect a next cycle with even higher rates, as there will be fewer machines mining!?
Your question is not clear, please elaborate.
I guess joker_josue is talking about the next halving.
Of course, with a block reward of 3,125
BTC, probably some people will need to switch off their ASICs or to move them in a different place (cheaper electricity or taxes for example). Especially if the fees does not stay crazy high like they are now (20% of the total reward per block)