Don't kid yourself, the users, since they are overwhelmingly in favor of the change, will accept the cap raise. The miners will do nothing and also accept the cap raise, because the miners will usually do whatever the users are in favor of. Also, since it's actually beneficial to the miners to raise the cap, why would they oppose it. So there, your Bitcoin cap raise, done!
So you are suggesting the users are incentivized to lower the value of their savings and damage the credibility of one of the foundational principles of bitcoin that is considered a Prohibited change (Requiring unanimous consent where even 1 user objection will block the switch) ?
https://en.bitcoin.it/wiki/Prohibited_changes#Require_unanimous_consentLets lay the cards out on the table.
Why are many of the delegates within Bitshares motivated to merge and inflate the monetary supply but not all the users?
How would this change be much more difficult to accomplish with Bitcoin than Bitshares?