I had an industrial machine that I inherited from my Dad, he used to sew leather for work bags. It was very old and kept breaking down, sold it. Bought a Brother machine from a sewing shop that will do most fabrics and I make my long bags and other things from heavy duty fabric that the machine will handle.
I would like to get another industrial some day but they are rather expensive, at least for the good ones. Cheaper to get ready made bags unless you want to make them to sell.