I'd prefer responsible or accountable for to blame, personally, but blame has a way of really getting you to zero in on the important-to-the-business aspect. The stuff people will be mad about if it fails!
So if you come up with an idea nobody else had thought of, and you convince the company to spend millions or more on it in engineer-time-dollars, and it ends up being a total waste: yeah, you might have some questions to answer. There's a difference between doing something nobody else thought of and doing the right thing nobody else thought of, and the more you're responsible for in a company, the more that falls on you if you either keep getting it wrong or get it wrong once in a sufficiently-spectacular fashion. (There are nuances here of course depending on how you sold it to people, just how much everyone was aware of the risk of failure, etc... but it's important to remember freedom to experiment and take risks is different than freedom to do whatever you want.)
(There are certainly places where cushy titles can be sinecures, but whether or not that's the case is going to vary greatly depending on the company and their positioning and needs.)
So if you come up with an idea nobody else had thought of, and you convince the company to spend millions or more on it in engineer-time-dollars, and it ends up being a total waste: yeah, you might have some questions to answer. There's a difference between doing something nobody else thought of and doing the right thing nobody else thought of, and the more you're responsible for in a company, the more that falls on you if you either keep getting it wrong or get it wrong once in a sufficiently-spectacular fashion. (There are nuances here of course depending on how you sold it to people, just how much everyone was aware of the risk of failure, etc... but it's important to remember freedom to experiment and take risks is different than freedom to do whatever you want.)
(There are certainly places where cushy titles can be sinecures, but whether or not that's the case is going to vary greatly depending on the company and their positioning and needs.)