Why is Bitcoin the biggest cryptocurrency?

This is a genuine question, why has Bitcoin maintained its dominance since its inception?

Is it because:

1. It appeared first.
2. Has the longest time to spread and snowball.
3. Delivers the most on its promises.
4. Satoshi Nakamoto walked away never to reveal who he is.
5. Is so far the most decentralised.
6. Did not have a pre-mine.
7. Offers the highest security compared to other blockchains.

Or any number of other reasons?

I am really curious, had Ethereum, Solana or DogeCoin for that matter appeared instead of Bitcoin, would any other cryptocurrency hold its first position to this day?