To some extent, they already are. IMO, one of the most unfortunate side effects of today's tech is the proliferation of incompatible battery packs as a vendor l

To some extent, they already are. IMO, one of the most unfortunate side effects of today's tech is the proliferation of incompatible battery packs as a vendor lock-in tactic. Even when the cells inside are a standard design like the ubiquitous 18650, they're almost always in a proprietary pack. Forget about using a Canon battery pack in a Nikon camera, or a Makita pack in a Black & Decker drill. Don't get me started on the whole "design a non-replaceable battery into that expensive device so we can make it 0.5 mm thinner" nonsense. Unfortunately, I think the problem is only going to get worse as time goes on.