Currencies are a medium of exchange.
Neither does Bitcoin, or The U.S. Dollar.
Having a constant stable supply of currency helps it maintain liquidity, and velocity, currencies that appreciate in value don't circulate as easily.
Monero has a block time of two minutes with funds being unlocked after 10 confirmations (20 Minutes) whereas Bitcoin (On-Chain) can take hours to days, if the network doesn't reject it, Bitcoin lightning has a lot of issues, Custodial wallets to function, needing wallet to be open to recieve funds, Bitcoin locked up in channels, poor channel management can cause funds to be lost, etc.
Monero has no supply cap but that does not mean it's "unlimited", it follows the issuance principle of tails emissions which is a constant, and predictable supply increase.
Momero protocols changes on an as needed basis, Bitcoin Soft Forks, & Hard Forks also, the main difference is Monero is more open to forking to tackle issues with monero, and innovate.
Monero is used just as much if not more in most peer 2 peer marketplaces where multiple cryptocurrencies are accepted, Bitcoin has the better legal infrastructure but Monero has actual underground market growth.
