I think the competition has caught up.
The R1 Hoody was a revolutionary piece, but now you can get five other tops just the same.
Capilene is still a winner, but it's not the only game in town.
The Nano Puff is great, but there are similar items.
Their Down Sweater is a classic, but being a jack-of-all trades, a specialist will opt for another brand's piece.
The Down Shirt was big for mainstream manufacturers (MontBell had similar pieces), but it's now been copied too.
Shells have gone to Gore Tex, unfortunately.
The market supports very few unique and proprietary fabrics these days. Patagonia's lineup is similar to everyone else's, and it comes down to brand loyalty, price, fit, fine workmanship, and attention to detail. I see more Patagonia on the streets today than ever, so I suspect they're doing just fine.