[jimbokun]

Apple also pioneered USB with the iMac. Because USB was the only way to connect anything to the iMac, it served as a catalyst for device makers to come out with USB devices, since they knew they had a captive market.

Once the number of USB peripherals reached critical mass, the general PC market followed suit.

So, will Thunderbolt adoption more closely resemble that of Firewire, or USB?

[nlogn]

I believe the new macs still have USB ports, no? So what incentive do peripherals manufacturers have to use Thunderbolt and target just the new macbooks vs USB 3.0 and targeting everything?