This is repeated like a mantra by people who dislike the idea that some other people find a way of removing price tags from... things. Open source software provided for free? Surely they are communists, stealing time from their employer, or living off their poor parents. UBI? Some will have to pay for it! Health care? Why someone who is not insured can get free health care? Etc.
Everything has a price, this is true. However, what is missed from this sentence is that price is not always expressed in monetary/material terms. Smile of a child has no monetary value, and yet it is one of the most precious things in the world.
On the other hand, usury, one of the foundations of the the current system, is nothing but a free lunch for someone who runs the system. Funny how bankers are seen as hardworking people (well, not so much these days), but often someone who barely survives working two jobs is considered... well, honest and hard working, but also inferior to the "fortunate ones".
If everyone is rich, who is going to take our garbage away? In the near future we might have robots to do it (we should!) but in the meantime... If there is no one motivated enough to do it, many people would chose the easy way and dump things in the nearest forest. It does happen a lot. It's just not convenient to take garbage to recycling station, which might be further away than that forest. Is it freelunching? Not from the forest's point of view...
So maybe moneyless society does not mean society with monetary system amputated, but rather with smart, ubiquitous, underlying system that tracks real value of everything? If each plastic bottle had an electronic tag tracking its life from creation to recycling (or decomposing in the forest), if each spammy mail we receive incurred cost to the sender, cost equal to the few second we of our lives we needed to delete that spammy mail, if we could see real value of everything we do - not the one randomly set by free market, but the one combined from most significant aspects... Maybe then this world would be run at optimal, most efficient, best speed.
Or maybe this is what is missing from the blind forces of free market... Some vision. Some awareness of global impact of each plastic bottle. Some conscience.
What an outlandish thought, isn't it.