From where I sit the #1 risk to the free and open internet these days is Google.
Edit: two reasons:
1) Because adtech is destroying society. Surveillance is never good. Ads as funding smears absolutely everything with perverse incentives that act consistently against both the explicit wishes and implicit best-interests of the viewers, and (it seems moreso every year) society at large.
2) Google is doing everything it can to protect and defend their control over said adtech, using all mechanisms at its disposal including a monopoly on Search, almost a monopoly (and veto power) on what defines HTML (Blink not Chrome), and like 70% of mobile platform.
Edit: two reasons:
1) Because adtech is destroying society. Surveillance is never good. Ads as funding smears absolutely everything with perverse incentives that act consistently against both the explicit wishes and implicit best-interests of the viewers, and (it seems moreso every year) society at large.
2) Google is doing everything it can to protect and defend their control over said adtech, using all mechanisms at its disposal including a monopoly on Search, almost a monopoly (and veto power) on what defines HTML (Blink not Chrome), and like 70% of mobile platform.