You're apparently better at spouting snarky comments than at reading comprehension, Fenix.
It's not about getting rich from fishing, it's about the absolutely unnecessary catch limit of the current fishing system. Even if you were to remove that limit entirely, fishing would never be a major source of income for various reasons;
-Limited by merchant capacity
-Limited by skills (biology, chemistry)
-Low value of goods, even transformed
-Time spent on the task
With the limit removed, it would be a supplementary income, or a worthwhile alternative way to obtain reagents. Currently, it's neither, as you're better off making money through other means and buying the transformed reagents directly.