Not many, I'm sure, but there are also people like me out there not supporting an LBS. Why not?:

1. There's one within a 20 mile radius. A tiny shop that survives with BMX sales to parents and bike repair. No dealership affiliation, few new bikes, odd hours that don't work for me.

2a. I'm retired and SO on a budget; buying a 2015/16 bike of the quality I would be satisfied with is totally out of the question. Neglected refugees of a bygone era are my rebuild candidates.
2b. Part of my cycling satisfaction comes from the constant learning process of bicycle mechanics, fit and theory.
2c. Parts for the above mentioned victims are much cheaper (better quality sought), and more readily available online with delivery faster than an LBS could get them into inventory. Again, refer to 2a regarding an LBS installing the parts sold to me...it's fair and just, but labor rates are beyond my means.

3. I haven't experienced any performance difference in my bikes and those I've ridden with on new state-of-the art, fitted bicycles with shop support, then again, I'm not into organized racing.

Although a small percentage of the general cycling population, I'd bet there's a much higher percentage of like-minded folk here on BF!