That's 166.4 million suspicious accounts per year.
For the year ending December 31, 2016, Twitter earned 2.5 billion in revenue.
During the same time period, Twitter had 319 million monthly active users. I don't see a note whether those are net of the suspicious accounts.
That equates to about $15/monthly active user.
While I don't know if the 'suspicious accounts' above are considered active users, at $15 per suspicious account...
Lost Revenue ($m)
If all 166.6 million suspicious accounts were also paying $15 (on average) in advertising and given advertising services revenue accounts for 89% of Twitter's revenue, is it fair to say that if those suspicious accounts were suspended, Twitter would be broke?