The Newton is not the only platform who was left by its parents. The MSX is a very popular 8-bit computer launched in the beginning of the 80's and abandoned in the beginning of the 90's. It was also a platform, and hardware was built by many manufacturers as Sony, Yamaha, Philips, Panasonic, etc.
Its users where mainly concentrated in Japan, Europe and Latin-America, and they have been keeping the platform alive for another 10 years developing Hardware and software by themselves. Now, after 10 years, the company with the rights to do so wants to reintroduce it.
A lecture by the father of the MSX
The history of the official MSX Magazine Look at the years!
The users manifesto about the MSX revival

It's a sad read, and it looks like we are following the same path with the Newton.