This is laughable to anyone who has ever worked on development of an ERP product.
Here's a thought experiment. Let's take one part - one part only - of the whole ERP / enterprise software spectrum.
Let's pick HR for an example.
Now let's pick one part - only one part - of the whole HR product spectrum.
Let's pick recruitment. How about of Google did what you say, but just in this tiny space? How much overkill would that be?
It turns out, Google did launch a product in this space. It was called Google Hire.
By your measure, Google should have smashed the life out of this little part of the bigger enterprise software space.
Instead, they shut down within 2 years in a burst of failure.