Does anyone realistically think "Facebook" will exist in 2100?

Looking at how different the web is today from even 20 years ago there's almost no services that are remotely the same.

This study is analogous to one which says "if Cardi B continues to gain new fans at her current rate there will be 100 billion Cardi B fans by 2100" - it's a fundamental misunderstanding of the data, just as pop bands go in and out of vogue, dramatically changing their customer-base, so do businesses (especially websites)