What about sitting on the floor, cross legged or legs extended. Would that be better than sitting on the chair. Any study on that matter would be good too.
Most of these arguments can be made about any country and any type of contractors, from car mechanics to house builders. Bad cost estimates, Cost overruns, work not completed to satisfaction of the buyer, work completed but with poor quality are all in general aspects of any kind of outsourcing. There's a saying if you want something done and done well do it yourself. Whoever you hire may not be able to satisfy all your expectations. Adding to the confusion sometimes people who charge a lot do a lousy job and people who charge less end up doing better work. Such is life.