Any marketplace, with the addition of designers and content, tends to become saturated, this means that the earnings will be diluted between the various artists.
It has happened everywhere, and it will happen here too.
Consequently, achieving the various steps to increase the % will be even more difficult.
The percentage steps are quite unreal, considering that I've always been told I'm one of the best seller on Fiverr Logos, and I currently fall into the 45% category...
The designers will leave a lot of money in the hands of Fiverr, money which, if it is re-invested in the marketplace wisely, could be an opportunity (and I must admit that in the more than 10 years that I have been around various marketplaces, Fiverr has proved to be very good at this), but if this is not the case, it could be a problem for many designers who will see their earnings drop drastically, with more or less the same sales.
I personally had advised, when I was contacted privately by Fiverr to get my opinion months ago, to re-evaluate the % steps, lower them to ensure that there is more equity and possibilities for artists.
unfortunately my suggestion was not accepted