This is correct. But your explanation is a little simplified. The people don't "give" power. In many cases, government takes it. The parliaments give the power

This is correct. But your explanation is a little simplified. The people don't "give" power. In many cases, government takes it. The parliaments give the power to government -- but they are not the people. They are elected people and belong partly to the established system. The problem that you describe can be better called: The people don't resist enough, that the system is taking the power and changing the rules so freedom is vanishing. I see it in my country: Before election day it was clearly visible that the government is selling our freedom for good contacts to the US and they turned a blind eye to anything the US did. It was totally visible to all. But they where reelected even with a surplus. So most people just did not care enough. Some extra money or personal benefits where more important than democracy or freedom. I am sure, that this notion in the western countries will retaliate heavily on us. I really fear, that now all the nightmares of Orwell and others could come true and humanity will sink into hell of its own devise.