that's your opinion because it serves your wishes but you're totally wrong. devs who rely on ads know very well that ads can be blocked, hence it's their decision if they prefer ads over sales, while who sells an app chose an approach that can only be circumvented by theft.
the best way to learn that is if you either provide (sell) intellectual property and/or just imagine it would be you who put many hours or more into a piece of software and then people would use it without you get your well earned remuneration.
frankly speaking, the worst are those who believe the sh... they are telling by self-sugestion and narrow minded and try to defend their point. if you think you have that right, knowing that it's not opportune for most others, then at least keep it for yourself so that we don't have to bother. further replies go unread because i'll set you to my ignore list, spoils my mood too much