In other words, capitalise on the decreasing quality of software engineers by offering services to them at a high price because they don't have the ability to make any of these services themselves.
There's a semi-joke that goes "all companies are software companies now" but there is a lot of truth to that..
It comes to down where a company wants to put its effort.
Do you want to own/operate/maintain all your infrastructure and services (and all the challenges that come with retaining scarce talent that is capable of that work), requiring you to substantially invest in an area that is not core to your business?
Or do you want to spend that money (and let's be real, less money too) to pay a trusted third party provider who will do a better job than you would anyways, because that's their area of expertise?
Then you can focus your (likely limited) resources on delivering value to your business instead.
