"Right now, $300,000 is not enough to create a prototype and show traction on the global market. It’s a simple math. Let’s say you need three developers."
That's not simple math - that's faulty assumptions.
While there are always exceptions, you don't typically need to hire 3 developers to build a prototype!
The biggest thing missing from this article is customers - who are they, what do they want, and how much will they pay?