The British capability to monitor webcams (Optic Nerve) was leaked even before Snowden, in 2012 FWIW:

https://en.wikipedia.org/wiki/Optic_Nerve_(GCHQ)

What Snowden has shown us is that we shouldn't have phones or other internet-connected devices at all if we deeply care about privacy and security.

However, if, as most companies, you have already chosen to move the vast majority of internal communications, records and documentation in the cloud, it makes little sense to then be afraid that they'll listen to your meetings through your phone.

Snowden just told us to re-read EU's report on ECHELON or to just check what the Patriot act authorized.

Oh, you can be paranoid, even though they are after you ..