This type of decision has fully cemented that Google is an advertising company. Every decision they make is to benefit advertisers regardless of how it affects users and developers.
It would be interesting to consider their business values on proxies too; while on the abstract level, it dilutes tracking data quality (I don't really live inside a data centre in Stockholm?!), it might improve the value of their more broadly aggregated data (we've seen this user's fingerprint elsewhere, so we can give you a more accurate location than Geo-IP lookup does)