I agree with you, your list here is actually true, bitcointalk is a place where a lot of people with different motives come together to either discuss and transact and all with the intention of making money. There are miners inverstors, traders and people with other services come here to carryout their several services and to some they see bitcointalk as an office, they can’t do without it and they just have to be here everyday to earn for themselves. It’s more like an office where the workers have different goals to accomplish.

Everyone here have different services they provide which in turn they earn money from regardless of their rank. Some people rank up their accounts to perform advertising services for some companies and sone rank up along the line while contributing to the forum in their own way. We all have different motives so to OP bitcointalk is not an office but to some it their office.

Nobody is obligated to rank up their accounts by force but having an high rank account will give you reputation and will be easier for people to trust you and make your work more easier for you. Newbie accounts have the  ones carrying out scam activities the most that’s why it is difficult for people to trust a new account since creating the account is free they wouldn’t have anything to lose.

People have life outside of the forum so working here doesn’t mean you don’t do anything other than the forum.