Also look at what Mongoose is doing with legend. PDF legend rulebook for 1$ only. That's practically as good as free.
That's what rulebook sales will be like in future. Basic rules for free pdf and cheap dead-tree version(basically covering just the expenses. Some companies might prefer to leave these for print-on-demand services to cater those customers who want them) for those who want.
Trying to make profit on basic rules is idea from '70's. Works roughly for rpg's(where books is only thing they sell. Though legend seems to defy that idea going for basic rules for free, profit from supplements...) but for miniatures better idea is to hook up players to buy more miniatures. That's where profits comes from. Miniature companies live and die from sale of models. Not by sale of rulebooks. Just as a point of comparison: If you calculate what I spent on FOW books and FOW miniatures then eventhough I bought intelligence briefing's I didn't really need amount was like 2-3% of total expenses...Even if player just buys one army and is then done that will be still easily less than 10% of expenses spent on books.
Miniatures is where the money comes from. And nice thing too that this way you don't have to spend time, effort and money fighting again internet piracy. At least currently there's no way to just download the models

(though that too will change eventually but at least that's still good many years off. Miniature companies should start to figure out how to survive when THAT happens. You think it's bad now when rulebooks get downloaded from the internet? What will you think will happen when rather than buying Mongoose's ships I could simply download models from the web and print my own high-quality versions? Tech isn't quite there yet but it's getting there slow and steady...And even if we forget about pirated versions(which will happen) this will also cause major explosion of new miniature designers who will be offering model designs for cheap price. Mongoose will then need to ensure they provide ships that beat the competition in quality or they don't stand a chance.)
Battlefront already figured this out. Free rulebooks to hook up players. Eventually more companies will change to this. Change is never quick process but it's like landslide. It just keeps happening.
Adapting Borg statement: "Change is inevitable, resistance is futile".