I highly doubt that. They are open-sourcing a small suite because it is economical to do so. Closed source means constantly having to re-train newcomers. Normalizing VsCode and friends will go a long ways. Same thing Google did with their IT certs.

Then you'd have a windows based steam deck. Valve got themselves into the mobile market by doing this. I imagine the Linux ecosystem will prove better for continuing mobile gaming in the long run.

Also, there are multiple scripts for HL3 and Portal3. They have all been rejected, considered not up to par as a third game in each series.