It cannot keep increasing forever. The higher the value, the slower the increase. I'm certain that if we reach $500k then that's the time that it will take months or years to see it increase again.
I can not explain to date Why the price of Bitcoin to the village is 20,000 dollars and What's the secret, and maybe what's the value of this coin, But if they say from $ 500,000, That's already beyond the frame of common sense. I do not understand the value of bitcoin, if it has a price so high.