Now what I see happening with bitcoin, a group of people (blockstream) is trying to take over the flow of value. They are doing this by keeping the block too small for normal transactions to succeed without their SegWit solution that they control, good luck running your own SegWit solution if you are not wealthy, so people like you and me will be forced to use their off-chain accounting that they control in order to use Bitcoin.
I read this everywhere, but this is fundamentally misguided. If "core" is "holding back bitcoin", then core is already the centralized power of bitcoin, and bitcoin is not the slightest bit decentralized. We just have "miner slaves" and "user slaves" doing whatever core decides to program, change or decide. If you think that core has this power, then you think that bitcoin is core's fiat money. Maybe this is true, but then, I don't see why you are complaining that they "take the power": according to you, they already have it.
If, on the other hand, bitcoin is a truly decentralized system, then core is just an open software writer like anybody else, and if there are competing open software proposals that implement, or don't implement, the god core's wishes, then this decentralized network will quickly come to a consensus of not using core's software and rules, but just another proposal, made somewhere else, no ? So the only thing that we need is another set of rules, with other software, right ? Well, this exists. There is BU for instance.
So, in as much as you think that bitcoin is decentralized, and decides by consensus what its rules are, and picks, by consensus, whatever piece of open software that implements this, core has NOTHING to say, and what the consensus is, is not at all dictated by core. So, if bitcoin is decentralized, core cannot impose its will. And if core CAN impose its will, bitcoin is not decentralized right at this moment. But then, core deciding that core can decide, is tautological: they can already decide, by assumption.
Bitcoin IS decentralized, and core DOESN'T dictate anything. What you see, is the consensus mechanism at work: immutability of the rules. Bitcoin will not change. The 1 MB blocks are with us for ever, and Segwit will not activate. Period. Want to know what bitcoin will be ? Look at what bitcoin is today, and was, a few years ago. The same mechanism that protects the 21 million coins, will also "protect" the 1 MB blocks and will avoid Segwit.