There are two things happening - one is straight up bad UX, especially for users with poor internet connections. This is called out in the search example, and i

There are two things happening - one is straight up bad UX, especially for users with poor internet connections. This is called out in the search example, and is fixable. Another is a little harder - if were a professional who used a computer in 1983, you probably only used one or two programs. This means that as a developer, you could reasonably expect your users to become power users, and thus design for them. This is no longer the case for most programs, so you see slower, less information dense, but more intuitive software succeed. Exceptions to this are software which only power users use - 3D modelling software, video editing, etc. These are still fast fast fast.