I understand it was not for profit.

The far bigger risk are big stakeholders who are upvoting each other in circles.

Sadly this cannot be stopped, its 'proof of stake' here and we cannot help with this.

Upvote-Services on the other hand, give everyone the chance to also get visibility.

You need money for bid-bots, not everyone has this. And so it is the case that good posts (30-60$), are not as high up in the hot/trending as the ones voted by the creator, that do not not match this quality.

I would still like your views on what you think Steemit would look like if everyone chose to delegate to a bid-bot.

Personally, I think it would be a case of the richest person wins, and hope that's not what you wish for this platform.