Even XMR is very much dominated on Darknet, I think these days it might be preferred more due to invisible blockchain.

Imo I would look lightning as a mode of payment for regukar transactions like for groceries, purchase and sale during regular life.

Whilst Bitcoin and Monero are more of a place to store money or possess large transactions. Though the banning of Xmr reduces its discussion in general public but over darker areas (expert with handling stuff which are illegal/banned) monero remains immortal, and so does our lovely Bitcoin.