The amount of users and transaction volume is critically important within a crypto-currency ecosystem to provide a high level of privacy and all alts have extremely small userbases. The fact that a user is using a "privacy focused" coin could also draw suspicion and extra focus vs bitcoin. The importance of a thriving market of local traders/ and non-KYC atms who will exchange BTC for cash is important. The diversity of wallets /implementations is also important in an ecosystem as it gives the users the ability to choose which one they feel is more secure and not backdoored.
Wait.
So your argument is that because bitcoin has more users and is more established, it is the winner by default? And no one can ever overtake it because it is already bigger than the superior technology? By this logic, bitcoin should give up because that same golden reasoning disproves the need for bitcoin entirely in favor of fiat.
If a vastly superior technology can overcome an outdated system, then bitcoin can replaced fiat. BUT, if you agree that a vastly superior technology can over an outdated system, then you have to either accept that Monero has a chance to overtake bitcoin or that Monero is not a vastly superior technology.
You called it a slight improvement, but that's ridiculous. Bitcoin offered us digital and trustless cash for the first time. Many alts after that tried to offer privacy as well, but failed because privacy is really, really hard to do.
But Monero is the
first fairly launched blockchain to achieve the holy grail of cryptocurrency: digital, trustless, AND completely private. In fact, it's so good that if you made it any more private (zerocash), you would risk creating security risks.
Cryptonote isn't some gimmicky privacy trick like masternodes... it's a true decentralized way to handle crypto privacy, and we as humans have never done that before.
Think about that: Monero represents a new paradigm for our entire species, and you would have me believe its just another alt coin? No way.