sidekick 5g 💗

As far as I understood the acquisition of Danger.  T-Mobile owns the Sidekick branding but Danger, now Microsoft owns the OS and backend side of how the Sidekicks worked.  Microsoft also owns the swivel screen patent where the slide screen patent was owned by another company.  Obviously phones have changed so much since then.  The Sidekick as a brand though, was and still is iconic.  Do we really have an ultimate texting device in today's market?