TechnologyConnections debunked the Phoebus Cartel a while ago.

tl;dw incandescent bulbs can be made more efficient and brighter by running them hotter, but this reduces the lifetime. The obvious Nash Equilibrium involves increasingly hot/bright/efficient bulbs and as much lying about lifetime as a typical consumer would accept, which is a lot. The idea behind the Phoebus Cartel was to force honesty on the dimension where it was most likely to disappear. You are free to disapprove of this and reject bulb lifetime policing, but if so you support the "everybody lies" alternative. Pick your poison.

> TechnologyConnections debunked the Phoebus Cartel a while ago.

A link would be good, to mirror the one in the GP.