Variometers for other Soaring Sports

I have noticed that there are lots of sports that also use variometers
and I have some comments/questions.

These variometers are for Power Parachutes, Hang Gliders, Balloons,
Ultralights, Parafoils to name a few. Here are some links;

http://www.ascentvario.com/
http://digiflyuk.com
http://brauniger.com
http://flytec.com
http://www.aircotec.ch

These are all standalone "outside the cockpit" variometers. I don't
know about their realiability or sensitivity how well these might work
"inside a cockpit". What I am impressed with is the innovative design
and feature sets of these devices.

Why don't these manufacturers build for our sport? Is it that soaring
aircraft are bound by archaic rules and regulations that other newer
flying sports are not? I suppose we all ask ourselves the same
questions about why our sport isn't seen as trendy and hip.

My $0.02.

- John DeRosa