NEWSFLASH: Bitcoin works because everyone acts in their own best interests.
it's baffling how many people don't understand this most basic concept.
I think that was the idea given one native coin. How about in the context of several native coins all calling themselves "Bitcoin?" There was a point when Bitcoin users were more or less unified in their interests. Now we have large, established interests like Bitmain, Bitpay and Coinbase who have major ROI and business concerns that may not be in line with the interests of all users. One side is more or less okay with centralization and regulation ... the other is staunchly opposed to centralization and is very privacy-oriented.
It seems that these sides are diverging further and further. So, in this context is Bitcoin working? I guess so, if we don't have a problem with the network splitting into multiple networks.
The only people that have a problem with bitcoin splitting, are those that want to force everyone else to stay on their vision of what Bitcoin should be preventing Bitcoin being what it will subject to the built in incentive mechanism.
Bitcoin does not exist in a theoretical void, it succeeds (or fails) on merit, in the real world subject to human greed and market force. If miners choose to mine some other coin it because the incentives their are higher. Incentives come from the market. The market decides what bitcoin is. The users decide what bitcoin is. Devs are custodians of the code, miners are custodians of the hashrate, exchanges are custodians of the fiat gateways. If an established interest does not align with the interests of the users, then the users will take their 'incentive' and go elsewhere.
So yes if most users defect to a so called altcoin, then by name or otherwise, that is "bitcoin" in spirit. The coin with the most PoW hashrate, the most value, the most users. I got into bitcoin for what it represents, what it can be, how it can change what money is forever. I didn't get into it for its name.
Whilst the network itself may not be split (depending on your view of Bitcoin Cash as being part of the bitcoin network, or an alt coin). The *crypto economy* is already split: the *incentive* is split. The countless alts out their represent value that user's have decided is better placed in a particular alt coin than bitcoin (either through mining, or buying) they have removed their incentive from bitcoin and applied it elsewhere. That is what you are seeing with Bitcoin cash. So I think Bitcoin as a concept is working perfectly. If any of those alts were significantly better you would see significant capital flight, as users vote with their "incentive".
So to me Alts are a good thing. Not because I personally wish to own them, or profit from them, but because they are the competition that further pressures "Bitcoin" to be the best it can be so that end users choose it, over any alternative.
This is the ethos of bitcoin, this is why none of the established interest(s) can control any crypto, because the users can ultimately move their "incentive" elsewhere.