If segwit activates, any attempt to steal anyone's Bitcoin by stealing segwit outputs will be considered invalid and any blocks that contain said transactions will be invalid and thus will be a hard fork. With a hard fork, anything goes. Anyone can make a hard fork and confiscate anyone's coins on that fork, it is, after all, a change in consensus rules where you can make the consensus rules whatever you want. "The Real Bitcoin" is no different. In fact several forks have been made from Bitcoin which no one really cares about, and "The Real Bitcoin" will just be another one of those. If there is no economic activity and no users actually use a coin, it is worthless and no one will care about it. Currently ALL miners are signaling for segwit per the BIP 91 rules. No miners are using "The Real Bitcoin" and no major businesses, exchanges, or users are using it. In fact, the vast majority of users (including businesses and exchanges) and miners are supporting segwit.
So sure, you could hard fork and steal coins spent in Segwit transactions, but no one would care because it would be a hard fork and it would just become another altcoin that no one ever thinks about.
Also, you could just steal all P2SH coins now. P2SH was released after "The Real Bitcoin" made their fork. And it would get you more coins much sooner. But no one would care if you did.
Miners are also incentivized to not hard fork and steal coins. Besides the fact that stealing coins means that they will be damaging the value of the chain they forked from, miners are also then taking the risk that the fork that they switched to will be completely worthless. It is far more profitable to continue to mine the chain which the majority of the community backs and will be using than it is to mine some fork which will likely be worthless with no users on that fork. There will be more transactions on that chain and more value with it as people are actually using it. Furthermore, any miner who did choose steal anyone's coins would come under significant criticism from everyone in the community and that would be terrible for their reputation.
Go ahead and continue voting to close and censor this question. It will not change the embarrassment that you will have when it comes true and all the losses that people sustain because you blocked timely disclosure. Your censorship only further lowers your future reputation. This page has been archived.
– Shelby Moore III – 2017-07-29T06:00:05.217Looks like the gatekeepers over on this site are going to vote to close this question, as there are 4 close votes and only 1 more needed. I have blogged about this. I think it is travesty that this site is supposed to be about Bitcoin, but you are going to make fools out of yourselves by closing this VERY IMPORTANT question.
– Shelby Moore III – 2017-07-29T12:59:22.067Go ahead and continue voting to close and censor this question.If you insist.This page has been archived.Archived? Oh no! – Nick ODell – 2017-07-29T17:42:20.730Nick, are you seriously pretending that you’re Coretards were not going to vote to close regardless of what I wrote in the comment section about the rapid assent of close votes. Btw, I upvoted @Andrew Chow’s answer because I appreciate participation, regardless of his affiliation. – Shelby Moore III – 2017-07-29T17:51:22.450
I get that you were going for a reverse psychology thing. My general rule of thumb is that if someone asks to be banned, I oblige them. – Nick ODell – 2017-07-29T17:53:56.373
Then why the fork did this circlejerk site unban me after I had asked to remain banned forever in 2013/4? – Shelby Moore III – 2017-07-29T17:58:10.910
Dunno, must've been a paperwork mixup. – Nick ODell – 2017-07-29T18:17:01.333
I pose that this thesis is wrong, since this never happened with P2SH. No supporting evidence, spamming FUD. https://bitcoin.stackexchange.com/questions/9678/what-is-script-hash-address-exactly-and-how-does-it-work/40730?noredirect=1
– karimkorun – 2017-07-30T10:46:52.437@karimkorun, unless you’re a poser (which seems likely), the correct word is ‘posit’ not ‘pose’. It is technically possible. I have provided considerable evidence that it is plausible at my blog which I linked to. The DAO attacker is the one who is promising that all the SegWit will eventually be stolen. That is cred. – Shelby Moore III – 2017-07-30T13:04:44.110