We should not exaggerate the number of Orthodox baalei teshuvah. Some Orthodox Jews might say that this is not all that bad, as it is better for a Jew to remain secular than to be religious in a non-Orthodox manner. In sum, most secular jews will embrace Judaism only if they have non-Orthodox options. They must see vibrant non-Orthodox forms of Judaism. Third, though few Orthodox Jews will acknowledge it, Orthodox Jews desperately need religious competition.
Nothing keeps people as honest as competition.
Of course not. The more political power a group has, the less it has to rely on good arguments and good models. That is why the Orthodox apologetics that are most persuasive to non-Orthodox Jews are almost all written by Orthodox Jews who live outside of Orthodox ghettos in Israel or the Diaspora. Orthodox Jewish writers who live only among other Orthodox Jews write a great deal - but usually about Jewish law, not about Judaism's relevance to those who experience life outside of Orthodoxy. The worst cases involve families in which one spouse becomes an Orthodox baal teshuvah.