In how many uses cases is anything other than perceived brightness relevant?
Increased costs to provide something the consumer doesn't want is exactly the kind of thing competition is likely to reduce.
The market doesn't always work but it's also very hard to determine what is wrong and how to fix it. If market equilibrium leads to destroying the ozone, it's easy. But if the market means fewer lumens per dollar (or even per joule), that is less obviously bad.
In how many uses cases is anything other than perceived brightness relevant?
Increased costs to provide something the consumer doesn't want is exactly the kind of thing competition is likely to reduce.
The market doesn't always work but it's also very hard to determine what is wrong and how to fix it. If market equilibrium leads to destroying the ozone, it's easy. But if the market means fewer lumens per dollar (or even per joule), that is less obviously bad.