Comment by j45

Because when the cloud initially came out 2000-2010, linux had a few things to improve including networking, virtualization.

The public cloud provided a way to avoid all of this headache.

Once it got figured out, the cloud wasn't the only way to scale anymore.

Except, more people than not might not know that today about the cloud.

Linux has gotten orders of magnitude more efficient and effective, so has the public cloud, and by extension, so has scaling (and self hosting)..