I would like to know why betBTC is not as popular as their competitors like sportsbet.io or stake.com
One possible reason is they have less presence in the forum; in fact, they are less popular in this forum. FYI, they have been operating the site since 2014. Another reason is, they have less market in different sports than other bookies. Again, they don't have good markets for cricket which is way more popular in Asian countries.
However fortunately we don’t depend on the forum - Majority of users are organic.
I'm not here for long time and within this tine what I have observed is; this forum don't give a lot of users to any service but this forum will certainly give you fame (defame too), this forum will add value to your project. Most projects promote them to only add value to their project. I'm sure ChipMixer don't get a lot of customers from this forum where they have a budget of ~2 BTC/per week I guess. Do they get 2 BTC fees from the forum; not at all but with their promotion, they have been the first choice of most people from the forum, they were able to create the brand image within the forum. And eventually, they will get benefit.