The more people are involved and have an interest, the higher the price.
The higher the price, the more speculation. The more speculation - the greater the price.
The greater the involvement of large funds - the higher the price.
The more possibilities of payment in any supermarket - the more interest and involvement, and certainly more PRICE.

If any coin appears on a new exchange - its price immediately increases, due to increased involvement of the number of interested people.

In my golos.io account, I wrote an article about the fact that if there is 100% involvement of people, the price of bitcoin can reach a value of $ 6 million.
We divide 135 trillion to 21 million.
But there is information that dollars in the world are more than 135 trillion dollars.
1,200 trillion if divided by 21 million. = 57 millions for 1 bitcoin.

About others... The more involvement, the greater the price.