If you think you're beaten, then you are.
I have recently been involved with a team where key players spent enormous amounts of time and energy trying to identify reasons why we shouldn't try things.
Working with people like this drags down the entire Team. It lowers morale because it becomes harder to make the changes that energise the working environment. The Team knows that it can never get better because the naysayers will do their best to block change and maintain the status quo.
If only people would spend time and energy actually fixing the problems instead of finding reasons to justify substandard tools, processes, practices and behaviours.