Good question, I'm curious myself. I guess it depends a lot on the client and how much they can save using your services.
I spoke with a surveyor recently who said his company love the new technology because now they just subcontract their work to a drone company. An example he gave involved the surveying of a subdivision, the drone guy charged au$5,000, the survey company add $2,000 and charged the client $7,000. The client was happy with the price and got the result within days instead of weeks. Not sure what software was used.