Only 5% market share for IP Surveillance Cameras?

A debate is emerging on what the 'true' market share for IP cameras. The generally accepted statistic is approximately 20% of cameras sold annually are IP cameras. These numbers are fairly consistent across the market sizing providers.

However, 3 key criticisms are being presented of these statistics:

• The numbers under-report sales in non-Western countries
• Non-western sales are increasing much faster than Western
• A large portion of IP camera sales are for non-security purposes

Could this be?

I do not know but I remain generally suspicious of market size numbers. In relation to this debate:

• Western manufacturers tell me they routinely make up numbers (hard to verify since almost all are private or part of large publicly traded companies that do not disclose audited segment numbers). 
• Asian manufacturers, even those who are quite large, routinely tell me they are not surveyed. In addition, chip manufacturers routinely complain to me that, from their sales, they cannot see how IP camera market share is as high as the statistics claim.
• A lot of IP camera on-line sellers and manufacturers note the significance of non-surveillance sales. By contrast, almost all analog CCTV cameras are used in surveillance.