My personal opinion is that the money is not in making quilts. Keep that as a passion and a hobby. If however you want to make it into a business, you have to offer services. Either teaching classes, or speaking, or online sales of quilting objects, is where the "making a living" is. One has to do the research though as with any business plan. You have to know what your demographic is, what they want, how to stay competitive, and know who your competition is. That, and you have to advertise. Blowing your own horn is not usually something quilters do, but if you want to make it into a business - toot toot!
IMHO.