[siquick]

There is a clear option to define the placement of the ad, and turning off Instagram is the first option you see.

[michaelbuckbee]

There is a real power in the default options though - and when the FB ads first started allowing IG as a placement it wasn't the case.

[georgiecasey]

i agree, loads of casual FB advertisers surely just leave on Instagram

the power of the Adwords and FB Ads customer base is sometimes overlooked I find. if Instagram stayed independent and had to build their own ad-customer base, would they have been as successful?