If you have a background in a specific field, you may find there is a demand for writing industry papers in your area of expertise. For example, there are often adverts for doctors, lawyers, nutritionists, and business experts from particular niches, to write white papers on different subject areas. These are well paid jobs that you will need to stake your reputation on, but that can often be worked on from the comfort of your own home.
Petroleum remains heavily subsidized by various tax breaks—and they've made fortunes for oil tycoons for decades. Windmill farms and solar energy would not exist without heavy government subsidies. U.S. agriculture has been heavily subsidized since the 1930s, and even more so in Europe. The U.S. steel industry is, in effect, perennially subsidized by anti-dumping and other import tariffs. Real estate benefits from government largess via Fannie Mae , Freddie Mac and the Federal Housing Administration and tax breaks.
You could also opt to use existing websites for making money. These include both active income and passive income methods. For example, you could sell some used items or invest in creating some digital designs that then can be sold on merchandise. Again, devote a sizable portion of your time to passive income so that you can slowly build up earnings that will arrive on autopilot without any extra added effort.