I've formed a positive opinion of Parham's character by the way he's conducted himself over the years. And Solid Queue isn't a serious Sidekiq replacement for the types of high volume applications where you'd want a Sidekiq license; I doubt he even sees it as a threat.
>>jamesg+(OP)
Do a Google search for Sidekiq DHH. First link is about migrating from Sidekiq to Solid Queue. Third result (for me anyway) is a Reddit thread where Perham talks about trying to make Basecamp a customer and that he wasn't able to...