[dkarl]

> I think the end goal for the EU here is to require all communication platforms used by EU citizens to be entirely run by the EU.

I think their end goal is regulatory convergence. They don't want companies to be able to trivially circumvent laws protecting their citizens simply by operating in a different jurisdiction, which is to say, if you want to play by different rules, barriers are inevitable, or else the rules are meaningless. Over the long run, the hope is that people can converge on similar enough rules that the barriers become unnecessary.

For example, suppose a country passes an air quality law that forces companies to reduce emissions from factories. They might suspect that instead of updating their factories, companies might sell their manufacturing equipment to new companies that mysteriously pop up right across the border and happily sell finished goods back across the border. Anticipating that, the country would want to do something to prevent it. The measures they come up with might be onerous and inefficient in the short run, but in the long run, the two countries would be motivated to converge on regulatory regimes that were mutually acceptable.

(not intending to endorse or criticize this idea, just giving my best understanding of how countries approach questions like this)