Ok I make a prediction here for 2030: Bitcoin won't be at $1M at all, very far from it. Bitcoin will be between $0 and the cost of mining a single coin. Right now, this is around $7,000. Could be similar or less in 2030.

I don't expect it to go anywhere. It seems to have a niche purpose, but will never gain mass adoption.

I make another prediction: By 2030 not a single cryptocurrency will be used mainstream / have replaced fiat currency. The strongest will still be Bitcoin, but it'll be as weak or non-existent for normal people like it is now.