Akai should be worried, they need to release a VSTi MPC to target the PC Producers, because there's too big of a market for that right now NOT to have a product that fits them.
Plus, they greatest selling machines, aren't in production anymore, and they don't make any money off of re-sell, lol.
Anyways, I would think their biggest worry would be the new Miko/Neko series, the pads on those are SOOOO close to an MPC, plus the Miko/neko is doing good anyhow. (I should have bought open labs stock, lol)
I think every hardware companys concern should be open labs, I know if I went home today and someone had stolen all my gear, I'd definitely finance a Miko or Neko.
But I'd still get an MPC to sequence it..... What can I say, I love my MPC 1000.