The EU is looking for tech independence

Issues of whether or not the EU is actually looking for tech independence aside… I find it remarkable that open source software offers so much potential for breaking free from US-dominated tech giants like Microsoft and Google, for relative pennies, and no one seems to want to pursue it. I imagine a country like France or China could develop versions of Linux (for desktop, mobile, and other applications like spreadsheets or web browsers) that blow away what we currently have for a cost that would be a rounding error of a rounding error in their current state budgets. Not sure why this hasn’t already happened, tbh.