Why do scotty Cameron putters and Odyssey and other have same or similar shapes?

Teaching pro Marius Filmalter has scientifically proven that putter shape has no bearing on putting outcomes, so anyone is basically free to use whatever they like. Thing is, most gravitate to the "simple" looks of things like the Ping Anser and Oddyssey's 2-Ball, #1 (the Anser "clone"), #9 (the small half-mallet, AKA Phil's putter) and the 2-Ball.

Golfers have proven they don't like what could be described as "weird"... pentagonal-shaped drivers, hot dog-shaped irons (the old Browning 440's), or trapezoidal putters. Though I totally would've bought Golfsmith's Enterprise putter (to see it, look here: http://www.golflink.com/golf-equipment/product-det... Never available in LH, though I tried for almost 2 months...

Most golfers use price to perceive how it performs. There's no scientific proof that a $300 Cameron is better than a $99 Ping Karsten Series Anser, but since it costs three times more, people think it's somehow better. People resort to the old "feel" thing... a $300 putter somehow "feels" better, but that's not true. According to Dave Tutleman, there's only a 10% difference between a carbon steel iron and a stainless steel version, if all else is equal. 10% isn't enough for the average golfer to notice. The Golfwork's Ralph Maltby made two sets of irons exactly the same, with the only difference one was forged from carbon steel and the other cast from stainless steel (similar to Nike's old CCi line, which they only did for one season) and no one, not even a handful of (unnamed) professionals, could tell the difference. The same can be said for putters... one's made of 303 stainless steel (ooh, it's "german"!) and another's made from 17-4 stainless- so what? That "german steel" and well-traveled design justifies that much of a markup? I don't think so...