Western countries, at least the ones I've lived in, don't often out-right ban software. It's unpopular and likely to garner scrutiny from both the press and constituents, but largely, it's a political grenade — you have to constantly fight the software suppliers each release; it's a signal to businesses that the government is not going to protect your commercial interests; and philosophically it's just over-reach.

Banning TikTok is akin to "banning all apps from a country" and the obvious response will be that country will ban your apps in return... and businesses operating in those countries may be quite unhappy to find their market evaporate.