Bitcoin is shown first as an example. Roughly April through February to see part of a bull run cycle. $BTC started well below $250 on this cycle, halfway or less, so we'll assume $100. So Bitcoin during one of its first major bull runs, went from $100 to $1,200. This was in the 2013. Fast forward 4 years.
Don't these charts already appear very similar? Look at where the run up stars, almost in the same place for each picture. I don't have any concrete evidence nor can I see the future, but if past repeats itself with the top coins having major bull runs, we'll see Ethereum at $20,000 within a few years. I always say, buy not for tomorrow but for next year and beyond.