Anything -reasonable and otherwise- has been tried. Mostly on the taxpayer's dime.
A number of industries, most famously big parts of the US oil industry, but they won't be alone, are bad ideas that people really, really, really want to see working. Therefore those companies have been using capital injections for profits. It should be called a Ponzi scheme, but in some ways it isn't.
A lot of companies have been using credit and capital to do what every economist assumes they use profits and free cash flow for : pay dividends and share buybacks. In reality for quite a few companies free cash flow has been steadily worsening since 2015 or so.
So we have the double whammy of the government making it VERY cheap for huge companies to try every idea under the sun, which of course they have partially used to make it impossible for others to try (e.g. Uber, Deliveroo and Domino's pizzas have used capital to beat every reasonable delivery company on price, the idea being to become the next Amazon, and of course, they have not become the next Amazon. And I would say that Amazon itself is also a "become monopoly - then jack up prices" play that so far hasn't even succeeded in part 1 of that. Their stock has done well, not because Bezos has kept his promise, but because of his reports of progress).
So has every idea been tried ? Of course not. But due to sustained easy credit it has become very hard to try new ideas. Those of us working for huge companies best prepare for a few leaner years.