Facebook becomes a one-stop-shopping center. Like Google.The Internet and especially the Web 2.0 were supposed to be an open place, offering open spaces for open applications.
Now, look at it from a different perspective : managing your online life thru only one or two places is dangerous. You'll end-up totally tight-up to one guy. Ask yourself : what if ? What if Facebook realizes they can make more money charging you for each time you go use something from them ? What if Facebook shuts down for whatever reason, competition, lack of cash, management's s retirement ? Same with Google : Search, Maps, Apps, Google holds our entire online life...
Now, this true story. Back in the late 90's, Fiber Optics Networking was an easy one : pick this fiber from this vendor, say Corning, put those transmission equipments from this one, say Alcatel, and insert some optical amplifiers from that other one, say Lucent Technologies (remember : at that time, they were rivals ;-), you got a perfectly running optical network, no hassles at all.
Until 1998, when Corning and Lucent Technologies came up with some new fiber technology, aimed at the forthcoming (at this time) high-speed WDM wavelength-division-multiplexing networks. From that very moment on, the whole optical networking landscape changed : from an open-interoperable model, it became a closed vendor-specific model. Corning fiber cables worked only with Corning/Siemens systems. Lucent fibers worked only with Lucent equipments. Same with Alcatel, with Pirelli Telecom, etc. Very convenient for the customers (read : the Telcos, ISPs, Carrier's Carriers, etc.), and for the vendor himself of course (easier to beat the competition). The perfect one-stop-shopping-center model, in summary...
Enters the downturn. Everybody gets hit, dramatically. The whole set-up crashes. Among all those Bubble Stars, only one company did well and survived quite easily : Ciena. Why ? Simply because Ciena was the only optical networking equipment manufacturer to offer OPEN solutions. Their gear was truly interoperable, vendor-independant. And that was the key factor with the customers at that time : everyone else was collapsing but Ciena.
Think about the next time you move one of your key application onto Facebook : what if ?...