Buying or selling a survey or engineering firm for all practical purposes is the same. The truth is that in many cases they offer both survey and engineering services, or at least have an arrangement to offer both.
What should you do if prospective clients no longer seem to value your work? Should you lower your pricing structure to match the competition? Invest in new technology to make your firm stand out? Bolster your marketing efforts to highlight your strengths? Throw in the towel?