I will agree with you that many times people have unrealized potentials in terms of both increasing their income and decreasing their expenses, yet there are also likely cases in which people are struggling within their own best efforts, and so they have difficulties (and perhaps even impossibilities) increasing their discretionary income.
Nothing is impossible when someone has a plan in their life and to achieve a much better financial source requires hard work by relying on existing opportunities and when we want to change our lives for the better, then every effort must be made to grow a much more stable income. The existing potential needs to be increased and at least be able to meet the needs of life and continue to try to set aside a little money to start investing. It may sound difficult for some people who do not have a steady source of income, but it does not mean it is impossible if they are willing to fight.
Try to cut back on excessive spending so that the money can be used to start investing in bitcoin. I remember an old adage that is often expressed by parents, try to live simply and look for potential to make money productively. Maybe this can be applied to bitcoin because we believe that over time the growth in value will make our finances better.