It is already super common, this is the basics of DIY projects
I looked for it several times online and DIY stores but never seen anything like this (at least not for constructing objects of that size).
I desperately hope something like this gets popular. I see one off ideas every now and then but there's not one big system that's easily purchasable yet.
They kinda are but they are also quite pricy compared to raw materials. And there is not that much market for "DIY but overpay for materials instead of getting actual drill and some fasteners"