I was thinking about Hearthstone reading his comment, it's exactly like that -- huge time investment if you want to pay nothing or a little bit, less time investment if you pay.

That said, the amount you have to pay to get a large collection in Hearthstone is staggering, if you drop $80 every few months for the next expansion you still only have a few of the epic and legendary cards.

And those cards become useless in 9 months as they rotate out of standard. Have a great deck you find fun to play one month? Gauranteed it no longer works after another 2. It’s an incredibly efficient scheme to make you want to buy more packs, if you’ve decided you want to be good at the game.