Eminent domain is a thing. You can absolutely be forced to sell your house to make way for a public project. Hell, after the Kelo decision, you can even be forced to sell it for private benefit.
So going by your own example, if the government tells you "sell your house or we are going to seize it via eminent domain", are you not allowed to say "the government is using eminent domain to take my house from me"? Now replace "eminent domain" with "ban" and "house" with "TikTok".
ByteDance has been aware that this was likely to happen for years, and legislation was signed in April 2024, giving them over six months to sell. There's nothing rushed about this at all. ByteDance is playing chicken, and they're looking ever likelier to lose this game.
The US is currently 1/5th of their revenue I believe. It’s very US centric to call not being extorted out of your company by a foreign power a loss. I do believe the legislation passed is legally binding and will hold up to scrutiny by this Supreme Court. I am a person who consumes fun videos on TikTok while also recognizing the potential for a adversary to abuse. I found TikTok to be a way more joyful place than the meta properties too. I hope Meta doesn’t get to reap the benefits of this ban and I’ve seen a lot of genz who seem to be extremely anti zuck. It’s an unfortunate outcome, but I don’t see a strong 1A argument on this.
But they're not asking ByteDance to just divest a portion for US operations, are they? It's successful in many countries, so it seems kind of radical to force them to sell everything just to continue operating in one country.