miners could abandon my SC that offers perfect anonymity. and that would be for another SC that takes my SC with perfect anonymity and adds even better functionality on top of that. then i'd have to move my SC coins yet again! what a hassle and potential security risk.
if the SC tech is in fact better, BTC hodlers would have to defect. as they defect, miners would have to follow. no?
money always seeks the place that treats it best.
If this is done (SC tech is in fact better) and no one is using Bitcoin, I can imagine there will be transaction (in new SC), how to withdraw coin from abandoned BTC chain. => New SC will accept, old bitcoin transaction even Bitcoin is dead ... because this is the only way how to create coins.