You could but very hard you could still make good money for the next years more than you will earn working a 9 to 6 job for sure . The market will rise and make a lot of coins pass their ATH. But getting rich its a matter of luck in my opinion
As I have understood, you say that only the guy that has a permanent job has all the chances to deal with the crypto and become rich. probably. The cryptocurrencies now are not stable - it will be a hard task.