I think there are still many opportunities that we can get in the future, I believe that.
I would change your doubtful statement with, there are 'always' new opportunities. I would even consider current market prices of coins to be an opportunity. I'm sure people are going to look back at today wishing they bought today.
...some don't want to join any project other than their belief in Bitcoin.
Indeed, a part of Bitcointalk community can be included in that.