I use the word "altruistic" to describe some Bitcoin software behaviour. For me, this includes incentives to increase Bitcoin adoption, for example to assist new participants or new transaction processors. Long-term, these incentives wither, especially as costs increase. When adoption is "done", if you want to participate, its your problem. You might find people willing to help for free, you'll find more people willing to help if you cover their costs, and still more for profit.