Game freak, a company that said that it was tOo diFfiCuLt to render ever pokemon gen 1-8 when they did it in sun and moon with all of 1-7. To only later add a few old mons in the new DLCs to make you literally pay for their laziness.

If they'll go that low for money, why wouldn't they cash in on making a gen 4 remake? People with a brain know they'll eventually make it, but there's always that one dude that's like "just accept that they'll never make diamond and pearl remakes"