In the past several years I have used half a dozen apps that were "designed for a specific business or organization" including a VPN app that only works for a l

In the past several years I have used half a dozen apps that were "designed for a specific business or organization" including a VPN app that only works for a large California software company, an account management app that only works for a company that does software contracting (different than the other), among others. The distribution audiences of these are comparatively tiny. So why were they allowed? Rhetorical question, we know why.