R&D of a given product is sunk cost, once you paid it is paid, it does impact ROI analysis but not the current situation of a company. Current products fund current R&D for future products.
That said, Intel *can* accept lower returns in the Celeron line if they can get the cash flows elsewhere, or if they accept the smaller cash flows to fund future products.
Kabini advantage lies in COGS, small chip manufactured in a very mature process and this will allow AMD to make some profit, but Intel can, and probably will put pressure on Kabini's segments. In fact, from a marketing standpoint, Kabini faces an environment far worse than Brazos and things will go downhill in 2014.
One have to wonder why AMD have a market cap of 2b after all and Intel an market cap that equals qualcom if all the above was true, and i dont understand the one sided arguments. I think it turns out the market is right after all:
If Intel will compete with a quadcore with a marginal cost of 4-5usd and next to nothing fixed - and yes now sunk - cost, with the core line, it will probably have to produce at a marginal loss, and with huge impact on their ability to tailor capex.
That will bring the company in a strategic very dangerous situation. As Pablo have shown it can easily tilt here. The point here is, Intel is in a fragile situation, and it affect their ability to just accept losses.
And Intel have no interest to do that, and will avoid it. It will put pressure on kabini - and that happens from day one - but the current IB will be as good for that as broadwell, as its bad business either way. Size doesnt matter here at all. And broadwell makes no difference to IB from the total perspective. Sunk cost or not. And they will get cash flow and plenty of profit elsewhere, but they need to. They are not in the same league as AMD, and the shareholders expect far more.
I hope for AMD they can move to GF, but i havnt seen anything besides old 32nm, than yet more ppt, bs and process targets that is so far from reality and actual realized results, it looks like a joke. I think its just pleasing Mubadala that is gone to dreamland, and I will see it happen before i can believe it.