[BeFlatXIII]

Are you trying to say that there are too many or too few users on each server?

Either way, 1. If you take out the 5 largest servers, the average drops significantly. I don't have the numbers available now, but the average may go to 50 without the top 5 largest servers. 2. The biggest barrier to getting more people to set up servers is that it requires a lot of resources (a.k.a. more money going to your favorite VPS provider), with the reputation of a fiddly install being a close second.

[hugogameiro]

You don't need a lot of resources to set up an instance. Mastodon runs easily with less than 1GB of RAM and 1vCPU. Also, you can even install it in a shared server, like you do say a WordPress. I have a hosting service dedicated to Mastodon https://masto.host/ where I host around 100 instances in shared environment in a Cloud of 8 VM.