Unfortunately the lower income people I know do not fall in to this camp. I have a fair number of friends and relatives who make very little money and struggle to keep their heads above water. They make routinely bad decisions or fail to do the barest minimum to be proactive about things. They have watched every show on netflix, or played every video game possible (at $60/pop). They spend money on frivolous things and fail to plan in any way for the future. Their impulse control leaves much to be desired.
But the weird thing is - they mostly realize this. They don't get too fired up about inequality. Whether it's consciously or subconsciously, they seem to realize they are not really giving it their all, and that other people work harder and are more disciplined. They appear to prefer their current situation to the stresses of "succeeding" at life.
Granted, this is all anecdotal, so take with healthy dose of salt.