nope, they make 0 money even without illegal websites, im pretty sure you're a new fan and dont remember the whole english controversy from a few years back. authors make about 30% of their net profit in korean versions and about 5-10% in the english one (as of a few years back, data might be slightly off/might have changed recently). even the ks author said she didnt make any profit off of her english translation, inform yourself.
anyway, they have every right to sue/be mad, they just dont sue the korean ones like ever even tho those have a much bigger following than english ones (surprise surprise) for reasons people cant really understand.
Is it just me or the korean authors have this racist undertone for attacking international fans but are completely quiet with korean illegal sites? There are hella illegal korean sites but they dont say a damn about it. Sounds kinda bs to me