Remember that "no styling" is just the default CSS styling for typography, which somebody painstakingly created so that it sort of works. Pretty much all you need to do to make perfectly readable text on the web is make the column narrower. You can certainly improve it, make it more beautiful and readable, but it's acceptable as is. The real problems arise when people override those default styles with worse ones. So, we can either force people to use their browser's proprietary typography—which is not the spirit of the web—or teach 'em to do it better, which should really take about an hour.
Remember that "no styling" is just the default CSS styling for typography, which somebody painstakingly created so that it sort of works. Pretty much all you need to do to make perfectly readable text on the web is make the column narrower. You can certainly improve it, make it more beautiful and readable, but it's acceptable as is. The real problems arise when people override those default styles with worse ones. So, we can either force people to use their browser's proprietary typography—which is not the spirit of the web—or teach 'em to do it better, which should really take about an hour.