How do you perceive Google Cloud's recent data egress fee change? (Google Cloud eliminated data egress fees, allowing customers to move their data out of the platform without additional charges, but this waiver only applies if the customer ends their relationship with Google Cloud)

Of course they should take away fees for data egress.  When we write enterprise contracts, we always have an exit clause and in that exit clause there must be a requirement for vendor assisted migration to the next vendor or on-premise system.  They have to do this and others should follow.  IMHO I think it offers a minor advantage while AWS and Azure still continue to charge fees per GB.

In all service, not just CLOUD, it is important to have an EXIT STRAGETY before you sign to start the new service.  Your project plan for entering into the new service or application is just as important as the EXIT Strategy, and maybe more important if cost of exit traps you and becomes a large burden to the company.

It would have been a game changer if the conditions were less stringent (e.g. "when you close a GCP project"), but as-is it's pretty much hopeless if you have an even moderately complex setup to remove from GCP.
That being said, it is a first step in the right direction by one of the big-3, hopefully it doesn't stop there.