not everyone enters this open source and decentralized world with money making as their goal. there are lots of open source projects that the devs hadn't made a satoshi for their work. heck why did Satoshi spend 6 years of his life on bitcoin to give people freedom if they made nothing?
by the way OP focuses on fees, otherwise a decentralized marketplace is a lot more that just fees. it is about the freedom that goes hand in hand with the freedom a decentralized currency offers.