> a) they will start blocking users that appear to be using ad blockers.
Fine by me. I'll simply mark it as the malware that it is and never return to that domain again.
> b) they will start including ads in ways that make ad blockers ineffective.
This technology already exists but its ignored because harvesting and selling user data is a cash cow. This is perfectly possible today...
<a href="someplace.com"><img src="/somead.png" /></a>