Empirically, you're wrong. In order to install random plugins, Firefox makes you click through a dialog that you're forced to read because the install button isn't active for a couple seconds. People fill their browsers with spyware anyway, because they want the {smilies, titties, stolen movies, etc}.
To tell the story again: my brother runs a cash intensive business that regularly moves hundreds of thousands of dollars a month. He narrowly escaped having a mid six figure sum stolen after his computer was hacked, and his solution now is to have a separate laptop that is only used for accessing the bank website and not a single other site on the internet. He's not stupid, he makes way more money than the majority of people reading this, and he finished a math undergrad with honors. And yet his computer got spyware on it that harvested the bank login. It's time to admit that our current security models have absolutely failed their users. At least on an ipad it's more likely than not that an application that will run is safe to run.
To tell the story again: my brother runs a cash intensive business that regularly moves hundreds of thousands of dollars a month. He narrowly escaped having a mid six figure sum stolen after his computer was hacked, and his solution now is to have a separate laptop that is only used for accessing the bank website and not a single other site on the internet. He's not stupid, he makes way more money than the majority of people reading this, and he finished a math undergrad with honors. And yet his computer got spyware on it that harvested the bank login. It's time to admit that our current security models have absolutely failed their users. At least on an ipad it's more likely than not that an application that will run is safe to run.