I would say that it extends beyond online fashion. Rick has established a 'uniform silhouette' in the fashion community that involves standardizing one particular look and shape.
Outside of the ubiquitous long tee/pods/trainers, leather/memphis/boots, you don't get a lot of people wearing much else. Stuff is just too 'crazy.' Of course, there are always people who are willing, in concept, to take the chance but how many dreamy artiste teenagers on the internet can afford $4000 coats? Not to mention there are very few stores that even buy the bolder rick pieces when what sells is geobaskets, denim, basics, leathers, and pods. LN-CC is already pretty out there in terms of their buy and they stock very few of the more challenging pieces. This buying pattern trickles down to the secondhand market (which heavily influences 'internet fashion') too, where those more interesting pieces are even less likely to appear for sale.
I would challenge the verity of your '2006' statement though. Just take a look at the collections on his site, they're really nothing like how people style rick nowadays. Dustulator, citroen, moog, etc. all featured silhouettes and pieces pretty removed from the 'contemporary rick owens' on both the runway and on the internet. Less layer-heavy, lots of larger outerwear, less developed bottom block silhouettes, etc. ( he had geobaskets on the runway in 2006, yes. Style was still very different from the ubiquitous outfits seen today. Maybe 'Strutter' gave way to that, or maybe how rick dresses himself. It is what it is, doesn't seem like it's gonna change)
Anyways, here's some less commonly seen rick stuff that is great.


Gleam w/ the python sidezip creepers and metallic fabric. My favorite season, probably.



cool mac from Naska (?)




These coats from Plinth are perfect. Too bad they retailed for $5000, were rare as shit, and even on gilt cost more than 2 grand. Those wool memphis trousers also never show up for sale.