I'm quite confident too that in 5 years from now 10 000$ worth of crypto can lead to a million. However, the hardest part will be fluctuation.
Ex: Next boom value go up to 100 000$, then drop to 40 000$ --->>Panic will get many sell here.
If people are able to hold on to their nerves and never sell for a very long time then you could reach those valuations in the future,but my firm belief is that you could make more money riding the wave too,if you are able to invest in good projects then the amount you could make will be incredible and for sure you could make more than that in this time period.