Why are free engines (PhpBB) worse than paid ones?

Question

CMS

Which engine is better to use when creating a forum? Paid or free? It seems that the most common engine is PhpBB. Why is he worse than Genforo, Invision Community?

Answer 1

The difference is that when using commercial products, you believe in developer support, and when using opensource, you believe in self-support, in-house, or in support of some third-party company that specializes in commercial services to opensource users. This is a fundamental difference.
At the same time, in the general case, there is no reason to believe that commercial support automatically means quality - crooked programmers and administrators are also on the payroll of large firms.
The rest is generally not directly related to whether the product is commercial.