Strategic investments by definition sacrifice current profits in order to gain *larger* future profits.
I won't deny that Intel's huge investment in mobile is by far a risky an uncertain move, but if they gain the market share they desire, I would certainly hope for them to at least 5x the investment (if not, 10x, or more...).
Only question is, when? There's a time value to money for investors.
Let's ignore sunk costs, by the way. Intel may have lost a few billion prior to Krzanich taking the helm, but that's water under the bridge. His strategy would have to presume that these billion-dollar-per-quarter losses in the mobile group start to trim considerably over the next year or two, and turn profitable within the next 3-4 years. After that, it would have to be a significant profit center in order to justify the current investment. If not, he's not doing his job as CEO.