Wouldn't opening up competition to other companies be exactly the reason why such non-US competitors may be able to acquire more market share? The only way I c

Wouldn't opening up competition to other companies be exactly the reason why such non-US competitors may be able to acquire more market share? The only way I could see the US being able to regulate non-US competitors who grow too large is to fine them, such as what the EU does. Although that may not be enough to stop them from acquiring market dominance and may cause retaliation (such as the current trade war). To be clear, I'm not a shill for these big tech companies. I don't currently work in any of them nor have stock in any. I'm concerned about their dominance, stifling of competition and their use of market position to render consumers powerless just as much as you may be.