It's purely customer driven. Recently, one of our customer wanted us to be FDA registered for making the clinical samples. We were listed as the only manufacturer for these samples. This was the case of a startup. Being a start-up, they had to partner and list our manufacturing facility as part of FDA approval process for one of their medical device.
I'm not sure for the commercial establishment, but my firm builds lot of product lines for well-known reputed companies, but we are not listed as one of their FDA registered sites.
Thanks,
Vikram