When BTC continues to half it will deincentivise people to mine it. Their rewards will drop as the price of electricity stays the same in that moment.
How will this affect BTC's usability? If less people are mining then does that mean there will be a traffic jam when people want to transact, thus significantly raising transaction fees and slowing the process? This will deincentivise people from wanting to use BTC.
At this point what else would people flock to to keep currency sovereignty?
BTC Lightning? Though this is dependent on BTC as a whole right?
Monero maybe? I don't know really anything on how that coin works.