Most jobs, even technical ones, truly do not require a Ph. D. This is just the market sorting things out. Why have zero (or negative) income to get post baccalaureate education if you can go work somewhere (for money) and learn on the job?
Well, ok, so here's the thing: If you apply to grad school in one of the physical or life sciences and they don't offer you a TAship for your first year[1], then they are politely telling you to f*ck off. It's "generally understood" (which means that nobody knows this unless someone tells them) that any serious offer comes with a TAship that will just barely pay your rent in a crappy one-bedroom apartment with a little left over for food.
[1] And make wild promises about how everyone has a full RAship with ponies by his second year