Not to undermine your point but IMDB actually started on Usenet in 1990, 3 years before the World Wide Web became public. So it did technically exist, but it certainly wasn't a household name at that time.
HTTP 1.0 wasn't even finalized until 1996! Although browsers and web servers supported the 0.9 spec and implemented proposals from the 1.0 draft before it was finalized.
It amuses me the amount of effort you've put into this instead of just simply googling the answer