I know - which is why I started that with "not ALWAYS the case."
It's such a shame that that's true though. My dad was afforded NO benefits beyond the average poor person (with the possible exceptions of good health and motivation), though he looked around and thought, "Hm, do I really want to stay in this town and be in the manual labor force for the rest of my life?" and obviously, no. It's not THAT simple, but a poor person CAN (have the ability to) look around and see that some people are doing better economically than they are and make the decision to change their pre-molded future.
This is why having resources available to possible first-generation college students is CRUCIAL. The organization that my mom and dad work for (VSAC) deals with student loans but put a HUGE emphasis on making available these sorts of resources by visiting schools (and having a close relationship with the school), having a resource center, and setting up events and college/career/resource fairs.
Mentors are also a great way to encourage kids to get their lives back on track. My parents are both mentors and I've seen their proteges (and others) go from kids who were lost in their lives, after tragedies in their family or just shitty living/family situations, to graduating high school and going to college or becoming an EMT or whatever. Right now my mom's focusing on showing her protege different college atmospheres, by just bringing her to campuses (she's in 8th grade), taking her to lunch in cafeterias, going to college sports games, and she's gone from not going to school to becoming a focuses student, getting ready for high school, and compiling a list of colleges and subjects that she'll eventually want to consider/look at.
So ya, rant aside, there are ways for poor people to move up the economic ladder, given the right motivation, making good decisions, and having the resources available for them to MAKE these decisions.