If people are willing to trade their personal information for cheap, cool gadgets, then who is the government to step in to say "no, you're not allowed to do th

If people are willing to trade their personal information for cheap, cool gadgets, then who is the government to step in to say "no, you're not allowed to do that"? By the same token, you could flip it around: could the government step in and say "you don't want this gadget that's always listening to you, but you have to have it because some group you don't agree with tells you to"? Third question: should you be allowed to trade my personal information for cheap cool gadgets?