Judging by the QC nightmare that game appears to have been, supporting just one installation configuration on an OS with the direct support of the company runni

Judging by the QC nightmare that game appears to have been, supporting just one installation configuration on an OS with the direct support of the company running that configuration (I wouldn't be surprised if Google had chipped in resources to get the Stadia port through) is a much different level of resource commitment than supporting it for a user base.