So let me see if I understand your point. You are saying "they aren't using it so therefore we should be able to use it" and are somehow comparing that to what patent trolls do?
Further you are saying that someone who holds a domain name (or any property) should have to satisfy a requirement of "use" of that property or domain name? And if not they should sell it to you for a price that you find acceptable or maybe just give it to you?
If that is the case then please tell me who will be in charge of determining what "use" of a domain name is?
What do you define as a squatter? Because it's not someone who registers a domain name and just holds it although that is the popular culture interpretation of the word.
By the way there is no such thing as "arbitration" with domain names. There is the filing of a UDRP (which costs much much less and you can file on your own) but to do that you would have to have some basis. I can assure you that if you have just formed a startup you don't meet the requirements for filing a UDRP. It isn't meant to protect people who "just want a particular domain and the seller isn't being reasonable" it's meant to protect those with true intellectual property interests (from what I'm reading in your comment you don't meet this in any way).