Definitely yes, but (example) the rear light of my bicycle insists to be powered by two AA 1.5 V batteries. Two rechargeable ones don't have enough voltage to light it so I need disposable batteries. The front light works with 3 rechargeable ones. We should stop building stuff that needs throw away batteries.
I probably change the batteries every month or so, which is usually about 40 hours of riding. Probably too often, but whatever. The light cost $15, I think.
(Actually I'm retiring this light today and switching to a dynamo-based lighting system. No more recharging ever. Looking forward to that.)
So actually, it would be better if everybody switched to rechargable batteries?