If you will search for the greates pump in the internet then you will see that there are actually no limits. However, coin should be really interesting for traders to have so big market cap. There are a lot of dead projects and for sure they will never reach 0.01bln market cap
The dead project should be included in the exception coz we are talking about the limit for the legit coins to go to the moon. No one can interpret how long crypto can go. The sky is limit and even bitcoin can worth 1 million dollars in the future.
That's why people like to use crypto as there's no limit and no one will be ruling the market. That makes it different from the stock market.