I don't think it's so much "paying for an app" as it is the constant rent seeking. It's not that people don't want to pay for 1Password, it's that we're all so damn tired of every company nickel-and-diming us to death. Can't anything just be a one time purchase anymore?
While 1Password probably wouldn't have gotten as popular as it is, if they started as a SaaS, instead of letting everyone think they could just buy it one time and be done, I doubt anyone would be angry about it.
Not defending any particular company here, but writing software for what is essentially a moving target (OS’s and browser extension APIs) is just simply not “one and done” anymore.
While 1Password probably wouldn't have gotten as popular as it is, if they started as a SaaS, instead of letting everyone think they could just buy it one time and be done, I doubt anyone would be angry about it.