Fish disks were an incredible contribution to the Amiga community. The impact of a dedicated and contentious curator cannot be understated.
I think a lot of platforms today could be transformed if they had someone doing a similar contribution to Fred Fish.
I wouldn't be capable of such an effort, I think few people are, and I'm not sure if it can be done in any monetized way. The motivation has to be purely for the quality of the job.
Debians apt repositories come to mind.