You should not. But if it makes you feel any better, Americans do the same thing by allowing Chinese tech like Zoom and TikTok operate in their country.
Simply turning off Google/Apple/Amazon/Facebook will have massive repercussions throughout that countries economy and politics and put that country at a competitive disadvantage on a world stage.
Yes, this is partially true. turning off Google/Apple/Amazon/Facebook/Microsoft will break stuff. this big five entrenched themselves in IT maybe too much in every possible way.
Also I don't believe country without big tech five will be at much disadvantage. They will be forced to build their own substitutes if they see need for it.
China and the entirety of the EU are the only entities on the planet that could possible compete with "US Tech" and thus the only ones in a position to "go it alone" in order to accelerate a domestic tech industry.
>Of those companies
You're just asserting it is possible to cut all but Google. OK then.
>Why should we allow Facebook to operate on our country given that they hire from the CIA?
I don't know why you're asking HN why your country should make decisions.
I have given you a reason as to why they would make this decision -- access to US Tech. That's the benefit you get -- sounds like a Q for your own gov officials.