But the truth is more complicated than this. The reason so many good shop management systems exist is evidence of differing priorities in software choices. For instance, if you want a system with powerful inventory features and financial controls, Protractor is going to be a strong offering. If it's important to you that your shop management software runs in a browser on any device, then probably Tekmetric, Shopware, or ShopMonkey (or other similar browser based programs may be the best fit. If keeping your data off the "cloud" and on premise is important, then Mitchell or several other offerings may be the sweet spot.
In general, I wish the shop management software companies would focus on improving shop management features - client and vehicle records, parts cataloging, inventory, estimating, reporting, invoicing, etc. It seems there is a bit of a trend for the shop management software companies to try to become some gigantic all in one leatherman tool that includes DVI's and more...
There are other great companies innovating in the DVI area. Why not innovate on what you do best, and focus on integrating well with industry partners?
Just my thoughts.