Re: 6.9bn
There was an "at least" in there. The real number is probably higher. Some cybercrime won't have been accounted by the FBI, which mostly starts caring when a U.S. entity is involved as scammer or scammee. Some won't have been reported to any law enforcement. Some won't have been counted as cybercrime and counts as a different kind of fraud.
But even if it's the right number, that's a big number. Individuals can face losses in the thousands and companies in the millions. That's enough to cause lots of problems. If we decided that Amazon could pay for all the losses due to crime, we'd be fine, but since we can't, individuals have to deal with the cost. Consider how a $10k (or local equivalent) loss would affect you. If you have savings for that now, consider how it would have affected you when you didn't. It's a problem for those people.