if the said user is scared off, so be it. however, best practice might be to give the user a chance to taste some of your unique content he doesn't find anywhere else. then - after a few seconds or on certain pages - confront him with the adblock-blocker and let him decide if it's worthwhile to switch his adblock off.
wrong conclusion. i have useful content. but on the long run i can't provide it to people who aren't even able to potentially compensate my efforts.
no one wants to restrict by browser. that would be silly. but one might want to restrict by ad blocking enabled. these people can go elsewhere, that's right.
i think this is a common misconception. imo ad blockers encurage the practice that all forms of ads get lumped together and get blocked as a whole. people might have nothing against unobstrusive google ads. but i'm sure many people find it more practicable to just block every ad type on every website by default. or worse: they don't even know what they are exactly doing or wonder about the many blank spaces. so they can't contribute to the financial survival of a publisher website even if they actually had nothing against it.
with ad-blocker, not they aren't likely but they aren't able to buy anything. that should close my shop down. one advantage for the website owner: he can detect if a customer is acutally capable of buying something.