i'm not an angel, but i would think that at least some would be. depends on the idea, just like software.
the problem of software vs hardware, though, is simply the fact that software will scale easier than an item that you must manufacture/produce/distribute. give someone $5k (for example) and a software company will probably be able to run further with it than a hardware company.
You're saying needing more money might help raise more money? I suppose. Hardware products are tough to bootstrap, and tough to flesh out issues with before having volume... and they don't get software margins. That said, I'm sure there's interest.. and it's probably inflated when the hardware is well understood, and maybe driven by software margins (Square comes to mind).
the problem of software vs hardware, though, is simply the fact that software will scale easier than an item that you must manufacture/produce/distribute. give someone $5k (for example) and a software company will probably be able to run further with it than a hardware company.