is that really realistically or just a dream ?
Noone knows, this is just speculation. I doubt it will be that high so soon.
50 000$ maybe but not 500 000$. But this is my speculation, everyone have their own

Yes, today such sum looks unreal, but we can't know what future waits bitcoin and what price will be in 2030 year, with the same chance it can be 0$. Now we can only suppose and imagine.