Because Filecoin being a tradable asset as well as a utility confuses how it's valued. If it rises quickly, it's better to sell then spend. If it drops, it's bad for those running servers. Both ups and downs are being driven by forces which have nothing to do with cost of services, that's the problem. Unless they fix the price of Filecoin against the USD to make it a real utility, it's a get rich quick scheme.