Socialism

We are living in a world owned by tech companies. People have 6 hours of screen time on average, mostly spent in capitalist apps like Fb Google Amazon Insta Reddit Youtube Chatgpt etc, and these companies shape people's opinions.
Without owning these apps, or creating an alternative that people use, it is very hard to change anything, because they can manipulate people easily, and actually people became zombies with this much screen usage.

So what is the plan? How can we create alternatives? Is there a socialist development movement? Or how can we own the existing companies? How can the govnments use these companies in a socialist environment?