Does Cardano gonna use COTI for their micro payment?

I just finished watching the Africa special and I have a question about Hydra and micro payment.

As we already know that COTI is a commercial critical infrastructure for ADA. Will COTI network being used for micro payment then COTI coin holder get paid in fees (in COTI coin) or Cardano will implement its own micro payment solution and release it to the market along side with COTI solution? so there are ADA micro payment solution and COTI micro payment solution each with their own fee?