if i want to get to current content in WoW i would of had to get Vanilla(50$ at release) + burning crusade (40$ at release) + wrath of the lich king(40$ at release) + cataclysm(40$ at release) PLUS every month im paying 15$ on subscription
if i just buy vanila i would be limited to 1-60 content, not allowed full access to any of the later continents and cities, skills, talents, cant pvp properly, not allowed in arena, cant do any endgame, and am generally wasting my time. how is that at all conducive to what you are saying? for any real application that does work or major game that requires constant updates you cant expect support and update for 10$ that's completely unfeasible.
you sound like someone who never played world of warcraft in his life, and it baffles me how you came up with such a nonsensical rebuttal