If they are invested, they will get frustrated. Usually, they will just go back to Facebook or Reddit and start talking bad about STEEM.
I often talk to people Face-to-Face about STEEM and why they should join. I don't expect that people are that responsible with their downvotes, as you would be.
If you read my comments, you must think I'm insane. But tomorrow I'll fly to a meeting, where influencer onboarding to STEEM will be a big part of the agenda. We're on the same team.