Even if it were anonymous, your recipients wouldn’t trust it. Everyone knows anonymous polls get you fired (which is still proof that some people still trust anonymity, but those people are usually not working here anymore).
I was curious and did a google search, looks like you’re right and this can happen; some anecdotes are terrifying:
> My manager let me know that due to my answers in the culture survey, they didn't think I was a good fit for the company anymore and were letting me go.
> said that my responses to the survey showed that I had a negative attitude about the company and that they wanted to part ways.
I think that's the opportunity in broader sense. I believe one of the key differentiators in future concentrated markets with well established brands will be trust. If you don't trust Google or MS in your domain - smaller but independent third party provider will be something you gonna look for. Same with forms - if you can establish independent brand which guarantees that payer won't have access to data - that's an interesting position to take and develop a business.
