meaning no one can mine cheaper then $30k right now and everyone can mine cheaper then $90k
If the price stays closer to 90k than 30k, more miners will mine, the difficulty will rise and the price range can shift towards 100k.
Also you may have been forgetting about the next halving, which, at the end of 2023 may have to start be counted into the price.
So even without taking into account a big bubble, there are still chances for 100k get at least touched within that time frame. At least "never say never".
Of course, you may have been also misled by OP "math" and assumed he was talking about 1m instead of 100k.
After every halving bitcoin has shown enormous growth so its no wonder that we will have another level of rise in the price next year end.
If you checkout the graph below, refrred from cointelegrpah then the pattern is in up trend only. Its very common since last three halving processes and no doubt it wil repeat. One, due to reduced mining reward miners will sell out huge chunk of bitcoin they mined over 3-4 years to compensate their mining proftiabiliyt and this put bitcoin to very low pricing. Second, this is the period where people start investing heavily and thus pumps to ultimate new ATH.
From cointelegraph