Protectionism? a recipe for failure
Um, no. It would increase the cost while killing innovation as this would create a distorted playing field that would kill smaller companies.
France tried exactly what you're proposing. What it got them was Bull -- systems that were bigger, slower, more expensive, and a generation behind systems built by companies that had to compete on merit in the marketplace. It also shifted the competitive disadvantage and hidden costs onto every French company that used those systems, or interacted with government departments that did.
Britain tried it too, and got ICL. Same story.
Italy tried it and got Olivetti. Same story.
Oh, and Bull, ICL and Olivetti weren't exactly the poster children for "innovation" by "smaller companies". In fact, protecting those dinosaurs actually made it harder for small companies to innovate in Britain, France or Italy.
Perhaps you can give an example of where your brilliant plan has been tried and succeeded in doing anything except raising prices, reducing choice, and lowering quality?