I know only one, that im earn more with my first uploaded template 4 years ago in first 10 days than now already 11th of month with my 47 items.
Envato also know about it, but anyway driving all traffic to elements.
Another marketplaces also lowering the prices… there is battle between marketplaces.
As a result, final earning from one downloaded product is some cents.
Elements is only for simple templates, but some peoples also uploading his top selling templates trying survive 