At most, markets can show whether they are financially worthwhile.
The market doesn't have agency. It's a projection of people's preferences.
One of the bigger problems with capitalism is that it reacts much too slowly to be a viable economic system.
One of the bigger problems of non-capitalist systems is that it requires whips to force people to do things they do not want to do without adequate compensation
It seems to run much of the planet and can go pretty quick when there are not bureaucracies slowing it.