I nodded off watching this great Michael MJD video unboxing and setting up an original WebTV last night[0].

He plays around with an ongoing project to reverse-engineer and re-implement WebTV servers for self-hosting[1].

[0] https://youtu.be/NjteQv6oYgA

[1] https://github.com/zefie/zefie_wtvp_minisrv