In the general context, income is indeed very limited but depends on how one can manage it. If you have skills, it is certain that people can generate more income by working in a more measurable and systematic way.
I do not think that you understood what "income is not limited" part, it means that you could either find more work, or find another work. That way you would make more money, if you want to make more money then you need to work to find it at first and then you need to work to earn it as well. I have seen people who do all kinds of crazy work just to make some extra funds and I have done that myself as well before.
It could be the opportunity for a source of income is unlimited but obviously one person's capability to get income is limited since they only have 24 hours and limited contacts. Even huge company even though they have unlimited potential still fall to a limited amount of profit per month due to certain factors. Multi level marketing seems to bypass this barrier but they also failed because a person's contact is limited and the MLM system is not unlimited down the lines.
It matters if you end up with a solution that will fix things, and I bet that it is going to matter one way or another. I believe that we should not be doing anything that will challenge the situation all that much, do not go against the tide and just accept that you need money and get to working if you want that.
Being innovative is another thing, though many people just goes with the flow, they often end up with just normal things no matter how hard they tried. We know that one can only have one result if he keeps doing what he always does. So to be able to have more productive events, one must strive harder, create innovations, and improvement to an existing system to be able to outwit the competitors.