Fully endorse that view. Build an open and better independent ecosystem start to finish, don't build just another stand alone X competitor, or AWS competior. Build a system for hundreds to thousands of solutions.
Probably an unpopular take: I don't believe the EU can create an alternative tech stack. It needs to foster an independent ecosystem; anything less will just benefit all the people who already know how to get EU grants. What's needed is the conditions for real innovation, which are a culture and mindset change, as well as money.