In the moderate to high-end bicycle market, both mountain bikes and
road bikes normally do not come with pedals when you buy the bike. 
These days, those pedals are "clipless", meaning that they come with a
set of cleats that the rider screws to the bottom of the shoe. The
cleat then mates with the pedal ("clicks in"), resulting in a solid
connection between the shoe and the pedal resulting in a more
efficient transfer of energy from the pedal to the crank.  This has
lead to the proliferation of bike pedal companies competing to supply
each bike with a new set of pedals. Each company has their own unique
configuration of pedal and cleat, and they do their best to try and
convince new bike owners that their system is ligher, more efficient,
easier to get in and out of, etc... than the other systems. Some of
the pedal companies specialize in making pedals (i.e., Speedplay,
Crank brothers) some sell pedals along with other bike components
(Shimano, Look, Time).  Now for the main question: What is the market
size for these pedals?  The follow-on question is: Can you break it
down by the top 3 or 5 companies?
Thanks in advance for your hard work on my question!

Shimano has Dual-sided pop-up bindings that position the body at 12.5
degrees angle for easy and fast entry.
Large cages for non-cleated shoes for all around use. 
Low maintenance sealed bearing cartridge axle. 
Cleat tension adjustment for each rider preference. 

Specifications 

SPD Cleat Surfaces both surfaces 
Pop-up Floating Cage 
Spindle Thread BC 9/16" x 20T.P.I. 
Spindle chrome-moly 
Cartridge Spindle 
Cleat Retention Indicator 
Cleat Retention Adjuster 
Mud Shedding Design 
Pedal Body aluminum/ barrel 
Cage resin 
Reflector SM-PD40 
Average Weight 472g 

 Sahalie LED flashing lights for cycling have been around for ages
now. But they all require batteries, which will ultimately find their
way into landfill. How about eliminating the batteries by being your
own power station? As these pedals rotate...

they create a gyroscopic effect, not unlike those ancient dynamo
lights that rubbed against a bike's wheel. The gyroscope provides
sufficient energy to light up 3 bright red LEDs. According to one user
they work well, except when stopped at intersections.

Thanks for the comment, but this isn't what I'm looking for.