Re: $22bn
$22bn. Firstly the figure is from an industry which lies for a living, so a bit of scepticism might be warranted.
Secondly, it fails to take into account people like me who have a "no fly" list for manufacturers who piss them off beyond a certain point. Using their spurious accounting methods, you could counter-argue that ad-block actually gains revenue because the more cantankerous among us aren't seeing the adverts and aren't blacklisting some manufacturers because of it.