basicaly yes, you are true
but , nothing is free bro
how u create a transaction without someone mined the blockchain,that why born a miner
how u secure ur transaction without buying the crypto first,that why born a market.
everything can change by time,
about crypto it self,
basicaly its same like electric voucher , like grab voucher or something like that.
the diffrence its crypto have a own network.
that why crypto is easy to be manipulated,
in this cases, its same like gold as a beginning,
change primitive economic thinking that focuses on barter.
and after trading to gold accepted,born a money based on how much u have gold to make it simplified
on that time,
greedy is born, once they know gold has a limited numbers.
...
well
in the end, crypto will acceptable.