I don't think Bitcoin's price may rise to $250000 within two years, because now I don't see too many investors entering the market, and now there are so many negative news!
2 years is a short period of time, but nothing is short when there is craziness in the market. We can still experience some bullish activity in the long run that can affect the market and a lot of enthusiasm with people calling moon over again. What has happened in the past will still always have the chance to repeat itself and there is no doubt about that.
This does not mean I am in agreement with seeing such amount in a few years; but what I am just implying is that we simply do not know as long as we cannot predict the future but it is not like it cannot be possible. In past bitcoin had showed 100x growth in 3 years of time. From that, we may expect another 100x growth in 4 to 5 years also. By this, from $5,500 we may expect $550,000 which is more than double what OP is expecting. It is possible but when is the thing, no one could sure about.