No. The mouse would just be a mouse. It wouldn't learn anything, because it's a mouse. It might chew on some of the books. Meanwhile, transformers do learn things, so there is obviously more to it than just the quantity of data.
(Why spend a mouse? Just sit a strawberry in a library, and if the hypothesis holds that the quantity of data is the only thing that matters holds, you'll have a super intelligent strawberry)
That's the question though, do they? One way of looking at gen AI is as a highly efficient compression and search. WinRAR doesn't learn, neither does Google - regardless of the volume of input data. Just because the process of feeding more data into gen AI is named "learning" doesn't mean that it's the same process that our brains undergo.
(Why spend a mouse? Just sit a strawberry in a library, and if the hypothesis holds that the quantity of data is the only thing that matters holds, you'll have a super intelligent strawberry)