If we are alone, without assistance from something greater than fiat/centralized system, it will be possible for Bitcoin to be captured by the system, which is basically the "greatest power in earth,"
This is unclear. What exactly are you talking about here? The main things backing/assisting Bitcoin are the nodes, miners, devs, and the most important of them all, the users. So I honestly don't know what you're driving at.
The Bitcoin principles make capture difficult but not impossible. Attempts have been made in the past to capture Bitcoin but they have to break through the principles of decentralization of Bitcoin, transparency, trustlessness, permissionless, immutability, censorship resistance, etc. To succeed they will try to weaken the principles by centralizing the nodes, operating opaquely, weakening immutablity and privacy , removing trustlessness and permissionless, etc . Has this happened or is already happening? Investigate properly, you'll probably see the signs. Notwistanding if they succeed in breaking the principles they will finally face SOMETHING greater than them, WHO typically intervenes when the going becomes impossible for mere mortals.
The things you described above have not happened. There is the 51% miners attack scenario that has been discussed, but has not happened. And even if it happens, they most they can do is add new blocks and create a double-spend transaction attack. They can't change the base structure, take out coins from wallets without permission, destroy the network, increase Bitcoin TS, etc. So, there are no signs to all the things you're describing.
The system does not give up. It moves like zombies regardless of what is shot at it. It moves and infect, and before you realize it, your friends, boss, those you count on or trust to maintain the principles will start working with it and against you. But we have something far greater than the system to depend on, which is our CREATOR
Uh...do you me God! That's weird, what does God have to do with Bitcoin? Okay, true, Bitcoin has a strong cryptography model coupled with its decentralized nature that it's very difficult to compromise—although, the quantum computers threat is still a variable that will be dealt with in time—but, this has nothing to do with "our CREATOR". This is just science (computer science precisely), maths, cryptography, game theory, distributed system, and human incentives. There is no divinity in this, trust me.
If today, for some reason, Bitcoin fails, it is all on us humans and Bitcoiners, not "our CREATOR".