When domainers first started back in the 90's there were some serious and legit questions about whether domaining was ethical.
Times have changed and for the most part domaining has proven to be ethical except for the few who still seek to use trademarked names for personal benefit.
These are the ones who give the whole industry a bad name. I don't do it and I suspect the great majority of other domainers don't either.....but we're all labeled as unethical by many because of the few who do.
Hi
whether your domain is tm related or not, does not preclude you from being seen as a squatter.
the negative labels that are put on domainers and the industry, is because they hold the registration to "key" domains.
i have been told in person, by phone and email, that i was squatting on plenty of 'generic' domains that potential buyers wanted, simply because the price was higher than they wanted to pay.
in respect to domains vs realestate -
you can hold the registration on a generic domain and a potential risk still exists.
where someone could claim infringement on parked domains when ads are displayed that reflect another entities brand.
that is one reason why many ppc services enabled users to block certain ads.
whereas in realestate, you won't loose your property unless you default on the loan or don't pay property taxes.
imo...