Linux and Wine open source ecosystem have always been resource constrained. For this reason, they have not been able to deliver the polish Proton brings to make

Linux and Wine open source ecosystem have always been resource constrained. For this reason, they have not been able to deliver the polish Proton brings to make the Linux gaming available for mass markets. If DRM locked frontend like Steam is the price to pay for it, it is a small price. Eventually their changes get upstreamed and it improves the ecosystem overall.