Netflix pays like a Big Tech company, is valued like a Big Tech company and was part of FAANG. 10 years ago the streaming tech they had was fairly high tech, even if it's now pretty standard. So they're considered Big Tech for historical reason
There was no world that Netflix should have been part of FANG (notice the missing A as original conceived by Cramer). At the time it was coined, Apple was already the most valuable company. But was left out as was Microsoft