Is there a more plain English explanation what this means?

I didn't understand their explanation, and then they showed Zapier that seems to be a service that relies on automating some tasks based on one or more other service .... that seems to be very "bundled" in my mind now that you've got two or more services heavily reliant on each other...

Lesson to learn: not everything should be planned as a complex enterprise app.

This was the game played by John D. Rockefeller. He had so much infrastructure built up by the time they split up Standard Oil, that each new state Standard Oil immediately had everything it needed to keep operations going and the breakup was essentially a bunch of paperwork. As a stockholder in all of the new firms, Rockefeller's net worth tripled, from ~300m to ~900 million.

To make this strategy work, you need mountains of cash. In his salad days, Rockefeller cultivated excellent relationships with bankers, who would stop him on the streets of Cleveland and ask him if he needed money. Eventually he decided to buy up Cleveland's entire refining industry, an event that became known as the Cleveland Massacre.

John offered three choices to rival refiners, cash, Standard Oil stock, or to get crushed. He leveraged his extensive railroad connections and infrastructure to bury competitors, for one thing he owned virtually all the oil tank rail cars, without which you couldn't sell your products because you couldn't move them efficiently.

The right choice was to have taken stock, which would have made you fabulously wealthy. If you were any good at the oil business at all, he would also offer you a job, which again would have eventually made you very very rich. He had an insatiable hunger for quality staff. It was never a good idea to bet against Rockefeller.