Scarcity is not what makes Bitcoin valuable...
It is simply a MINIMUM REQUIREMENT for a token to be considered a contender as worldwide dominant ubiquitously accepted money.
There are other minimum requirements and Bitcoin has them all.
Nothing else does so it's no contest.
Some things that are not minumum requirements...
1) bank the unbanked nonsense
2) Perfect fungibility
3) Complete privacy
4) Instant L1 transactions
5) Cheap self custody for all, including the very poor
6) Uncensorable JPEG storage
7) Some shit about saving babies
8) Equal distribution to all humans
9) Difficult to use by criminals
10) Usage of clean energy
11) Some non monetary use case, or "intrinsic value" nonsense
12) Backing. Money is what backs, it does not have backing by definition.