Just took a look at the collections featured on P5 home page.
Must say I was somewhat dissapointed to find that a very big part of these featured clips were from the same big players...
Hotelfoxtrot, AILAIMAGES, SPOTMATIK... all have a very large representation in these small collections.
No debut about it  - these companies produce some great looking and high quality clips - but with so many smaller contributors out these producing clips which are as good as any other  - one must ask why??

Why promote the bigger players with huge portfolios instead of the smaller contributors?
I might just email Pond5 to hear what they have to say about this...

Because they are a business, and they want to make money.

The big producers are likely to keep producing quality content if they are happy with sales.

It's just business.