- the more people that use adblock/sponsor block, the less effective ads are in general (lower advertiser ROI for each ad)
- if ROI for ads drop, ad sellers (eg. youtubers) have to reduce the price charged to advertisers
- given that ad budgets are more or less constant (companies will always need to reach customers) there will simply be more ads, since each ad view is now worth less.
- if ads become completely ineffective (eg. reddit) ads will simply become disguised as content to get past people's filter (aka content marketing, submarine articles etc)
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