Heck, there are probably 20 companies with a Silicon Valley zipcode that could do that work, then. And a few in LA. I know people who could do this in their garage (and that's not hyperbole).
That would rather defeat the point of this whole fake political-judicial spin effort. Teh terrorists already destroyed their personal phones that had actual terror secrets. These work phones, which could have been confiscated by San Bernardino County at any time, are vanishingly unlikely to yield months-old information of any sort.
They already retrieved a ton of info from a month or so old iCloud backup. The FBI has a good idea what might be on the phone, but they aren't saying what they already found.
If someone with the necessary equipment were to document the process of attaching the write-blocker an iPhone of the same make and model, and successfully logging in on the 11th try, it could go a huge way towards illustrating to the general public what this case is really about.
Might not be bad exposure for a security startup, either.