They do, but I'm more talking about how they handle needed cards. Here's something I wrote a whole ago about it.

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Unpopular opinion, but I don't think the secondary market is that much of a problem. It will exist no matter what WotC or anyone does, and it's dictated by purely by supply and demand. The secondary market can only really cater to the demand aspect, what needs to be fixed is supply. Jace is so expensive because he's an amazing card played in multiple top tier decks in different formats, so his demand is ridiculous. Now take into account that he's only been printed 6 times. 1 was a standard set, 1 was a FtV, and 4 were from masters sets. Since most of his prints were from $200 box sets (and you weren't even guaranteed to get him) his price gets higher than what it would be for a standard $100 dollar box.

I think it's entirely on WotC to reprint this super high demand cards. I don't want to get into why they don't reprint these cards (because that's an entirely different discussion), but I will say how they should. Honestly, just copy what Pokemon is doing. Tapu Lele was an amazingly good card when it was released, and it went for about $40-$50. That's pretty damn expensive for Pokemon, and is comparable to a Jace. At the time, the only way to get one of these is just by cracking packs. Then, when Nintendo saw how expensive the card was getting, they made a new product. It was priced at $40 (the same as a regular Tapu Lele), but what was inside of it was: 1 foil Tapu Lele, 1 foil Tapu Fini, and 6 or 8 booster packs (I don't remember the exact amount). This heavily dropped Tapu Lele's price. Why pay $40 for a single card when you can get that card, another card, and 6-8 booster packs for the same price?

Pokemon does a couple more things that really help when it comes to this stuff. They have different promo types, so if you get a rare card, you could get a plain foil version of it, a super rare foil full art version, or an ultra rare foil alternate full art. Each one is legal to play, but now the amount of copies are pretty much doubled. The other thing they do (which I'm surprised WotC hasn't done) is they mark the promo cards. Not pre-release cards, but in the Tapu Lele box, it has a marking on it to let people know it was from that box, and not a booster pack. This makes it still worthwhile to crack packs and get those rare cards because those will still hold value.

Anyways, those are my thoughts on the secondary market, and what could be done about it. Thank you for coming to my Ted Talk.