They’re not competition if you own them! Typepad continued for over a decade after it was purchased. Auth0 is still in maintenance mode afaik. It can last as long as revenue pays for the FTE to maintain it, or until corporate reallocated the FTE to higher revenue-per-FTE-hour opportunities.
Auth0 is constantly releasing new features, including a new major offering now for AI agents. Plus is still very active in the development community, with open source like OpenFGA, frameworks, contributions to standards and so much more.
Not sure where the maintenance mode is coming from...