I guess Spain is hoping that power still comes from the barrel of a gun, judging by the violence employed on referendum day - but interested to see what the hell Spain thinks it can do if the whole of Catalonia goes on strike. I guess it's a battle of wills now. How much of the population of Catalonia really want independence, and what sacrifices are they willing to make to get it?
For better or for worse, there will be no independent Catalonia in the foreseeable future. About 40-50% of Catalans don't support this. The EU doesn't support this, no Western nation supports this (save maybe Russia if you consider them Western -- and even their position is unclear). Furthermore, Spain won't allow it, and they're the main actor in a position to do something about it. Even if Catalonia somehow manages…
If anything, economic troubles reinforce the determination.
Once people take independence as a question of pride, they're extremelly reluctant of considering selling their independence for money.