When I think about it, right to buy forces social landlords to sell houses at artificially cheap prices to tenants. They don't like this so they respond by restricting the amount of social housing and building less of it. It's a pretty stupid policy in terms of numbers and the only justification is that owner occupiers are more invested and care more about their surround era than renters (there is evidence for that of course). Either way it results in less affordable housing not more.
Extending right to buy to the private sector would have similar unintended consequences. Any landlords willing to rent their flats out under those terms would demand much more compensation in rent. you'd probably get less buy to let activity of course. On balance It's not clear that it would help renters one bit though.
Moving on from'running' watches:
A Watch that loses half its charge after 4 hours- not great if it's a non electronic one that you bought because you love watches and are happy to wind it up yourself each day. Still most non automatic watches have a much better power reserve than that.
However an Electronic watch that you then have to plug into your desktops usb to recharge looks like Apple is laughing at you.