How can that be? Server psus are probably one of the most common parts they are using.
Do you really think you can buy >2k PSU off the shelf with immediate delivery? Why are you underestimating the sales force of the PSU manufacturers?
If you consider that just the top3 brands will produce and ship an expected 2,9-3,1million servers in 2014 and 35% of those are delivered with more than 1 psu.
Puts just those 3 brands at a need of 4,5-5million server-grade psus a year.
Another 2-2,2million switch/san psu's from again just top3 brands.
Considering marketshare the lower brands that adds another 20% ontop of those numbers.
Around 8million units are needed just for the mainstream server/switch/san production a year.
or around 22 000 servergrade psu's a day just for mainstream servers, no clear numbers for other industrial applications or whitelabel servers.
So yeah, must be soooo hard for them to have to produce another few thousand for spondoolies...