Yes, for now just 58 billion in market circulation. XRP has a total supply of 100 billion which is held by the developers. What is their mechanism to manage price in the long run, burning mechanism where only 0.00001 XRP will be used up as transaction fee automatically burnt in the process. It takes 1,000,000 transactions to burn 1 XRP out of a total supply of 100 billion.
How long will it take to burn 1 billion of the tokens to create enough scarcity? Within a decade from now, there is a possibility of Bitcoin hitting $1 million before XRP making it above $10-$100.
Changing the supply is not too difficult, developers will be able to reduce the supply quickly in many ways such as buying back and burning, or changing the algorithm to increase the burning rate...Like BNB has a supply of 200 million, and they have burned over 60 million in just the last 8 years, and the goal is to bring the supply to 100 million. Even CZ can make BNB supply even more scarce but the problem is even if it is scarcer, it still cannot compare to bitcoin. Because after all, they are centralized coins that cannot guarantee security, privacy, and they can increase their supply in the future if they want...All of this makes them incomparable to bitcoin.
Is BTC so private, per se? It's secure for sure, but private - just like most coins out there that are not going as far as to be outright stablecoins backed up by big companies.