Catholicism has probably spent a heck of a lot more money on complex proselytizing than Orthodox Judaism. Also Catholics were competing with the Protestants - rabbis have no real competition, since their only audience is Orthodox Jews. But mostly, my point is just that there's this huge, worldwide organized Church that has spent who knows how many equivalent billions of dollars on theology. It's amazing how little they've accomplished, really, given how much they've spent and how many geniuses it wasted (theology was the string theory of its day), but they still did end up with something. Probably an equivalent amount of raw genius, if not money, was wasted on Orthodox Judaic halacha, but in a much less competitive, outside-world-facing way.