It's not so much fighting one another, almost all the Monero people hold much more BTC than XMR, the difference is they/we understand the importance of always-on privacy and anonymity. The most logical thing to do is to hodl BTC and having a bit of XMR on the side for private purchases. This seems to be the conclusion of the market as well, judging by Monero basically having become a stablecoin in the last few years (only pumped a bit recently), as well as it being top contender in any shop that takes both.