It worked for China because they were in position of power. The US wasn't established in China and they needed Chinese users to grow their global user base and influence. Meanwhile, China had the wealth and power to say no and instead fund and develop their own homegrown tech equivalents.

Europe doesn't have that same level of power. If tomorrow morning you banned Microsoft, Google, Apple, Amazon, Salesforce in Europe, you'd destroy their economy.

What Europe needs to do is create the conditions for tech companies to emerge that could truly compete against US big tech. As long as European will prefer working for US corporation, there's no chance for Europe to compete. Simple as that.