I don't think you're picking a fight and your question makes sense in general, but the whole point of owning retail formulas is to offer the only project that resembles 100% what it was like playing on servers like Teon, Franz, Bartz and so on. Also, it holds the collector's value.
Imagine a very rare coin of 1 cent. Its typical value is 1 cent, but it can be sold for 3.000 or even higher.
My point is that yes, you can easily change MC rate buffs, set caps, or create your own MC rate formula if you're using Java code, but you will never have the original version. Most L2J projects don't even have an MC rate formula at all, but just use a static value of 0.8% (8/1000) as a base mc rate and it gets multiplied by buffs.