If we compare the crypto assets market to the stocks markets in general, can Bitcoin be considerated as the equivalent of the dollar?
In the stock exchage we buy shares with dollars.
In the cryptocurrencies exchanges we buy tokens or coins with bitcoins(and other cryptocurrencies, Litecoins, etc).
Somewhat yes, Bitcoin being the king of all coins just like dollar being the highest or most used among all currencies. In terms of importance they are not equal though (yet) Because bitcoin doesnt affect an economy. If ever government get involved with bitcoins then it can be considered equal to a dollar. Simply because they will be toe to toe with its value.