I've been here (b4x forum ) literally since day 1, migrating from the "old" b4ppc forum...
This forum has over 110k registered users.
I am not a statistics fan/man, but I guess at best, 10%/15% of that have used the suite at least once... this means about 10k devs.
Let's be optimistic and say that 5k of them have been using it in a regular basis...
In my book that's already a very good number for a suite lead by 1 man, and that has never seen big highlights by the big companies.
From these 5k devs, unfortunately, only a few dozens care enough bto make themselves seen and read, either being in asking or in answering. The rest are lurkers, that only use the knowledge base created by the active users, and contribute zero to it.
It has been so from day 1, and I guess it will stay the same.
The B4X IDE suite, AFAIK, is not at risk here, being it in further development with new versions/updates or being it in continuous support.
However, I do see a risk for the forum, where we always see the same "old" nicknames and really active users, and once in a while, a few new ones.
The risk is that, if some major contributors (not citing names, I may forget someone!) would suddenly stop being active in the forum, it would come to a complete halt, and the knowledge base would "freeze".
Erel does the best he can, but the best WE can do is to support him, not only financially, but specially by sharing our acquired knowledge with others.
Not many IDEs can claim to have survived 15 years with an active user base!