If you want to mine big coin (BTC,ETH,XMR etc) for now, yes of course it's not profitable anymore. Except you have great and a lot GPU you can be compared with ASIC miner.
But if you want to mine new coins, i think it has a possibility to get rich or profitable. You have to research about new coins, i can be sure several next years can be rich. Why? ,because, i think once was btc's miner not as rich as now. They also do research on that coin. So better leave the big coins and start looking for new coins for mining. Such as Musicoin, TRTL, ARTO,..etc
Happy research