Instead of talking about what to buy, which project do you think is actually a ‘dead man walking’?

​Everyone on this sub is always looking for the next big win, but we rarely talk about the stuff that is slowly dying.
​If you had to pick one project currently in the Top 20 that you think will be completely irrelevant or 'dead' in two years, which one is it?
​I’m not talking about small scams—I mean the big ones that people still defend even though the tech is old and nobody is actually using it anymore.
​Which one are you staying far away from and why?