This is quite elaborately dishonest as data portability is one of the requirements of GDPR that came to life in 2018. It's not like suddenly those giants decided to be good companies and allowed data transfer between services. It looks like they use it as a PR piece and at the same time trying to ensure that users won't flock to competition that has not signed to their thing.
I think you’re looking at this the wrong way. The fact that companies can sell their regulatory obligations as a positive PR move is the carrot to get them to do it well and be proud of it. Stick only is how you get half-assed left to rot technically compliant implementations.
