Not only the UK government still has a significant power to leverage here, but also corporate doesn't usually want to directly go to war against governments sin

Not only the UK government still has a significant power to leverage here, but also corporate doesn't usually want to directly go to war against governments since that's going to be an alarming signal for all other governments across the globe, especially EU who is actively seeking a way to regulate US big techs. Even US cannot protect them without a good justification.