Quite a large percentage. I worked on a site that got 1 request per second and they were able to handle it by spinning up like 20 VMs. Turns out they were just

Quite a large percentage. I worked on a site that got 1 request per second and they were able to handle it by spinning up like 20 VMs. Turns out they were just using Entity Framework wrong. Whoops. But also, though, you have to consider that most places aren't Plaid, and most places developer time is more expensive than throwing an extra machine at the problem.