Around 2013, the Canadian government considered allowing Verizon to enter the Canadian market by buying WIND Mobile, a small budget carrier which was looking for foreign investors. They were faced with a huge fearmongering campaign orchestrated by the big three carriers, with TV ads like this:
https://www.youtube.com/watch?v=ndQv6wwaNyM
Needless to say that Verizon backed out of the deal immediately.