Going to be devil's advocate here, but if a business has to be large scale to have a good ROI, then it should be reworking its business plan so that it profits

Going to be devil's advocate here, but if a business has to be large scale to have a good ROI, then it should be reworking its business plan so that it profits at smaller scales. We can't just simply pump capital into all businesses assuming they will actually profit at a higher scale -> That's the "if you build it, they will come" philosophy, and we have plenty of examples of that not working.