OS has contributed to advancements in design, but proprietary initiatives employ a fleet of people to research, design and case study a technology. They do it all day and not as a side project after work.

Again, it isn't a case of one vs. another. I wish we didn't need to take a side and finally come to a conclusion that both are good in their own ways. Evolution is key.

There are plenty of people that are employed full-time to work on Open Source software. Don't perpetuate the myth that all Open Source software is created by people 'in their free time.'

Most aren't. That is why the myth exists. Plenty < Majority.

If your implementation relies on technology that you have licensed from a third party.