I think Nayak's situation may be different from those of us on a university payroll. I agree that in the latter case, helping out colleagues to some extent is in our job description, and co-authorship is the preferred reward, where appropriate. But for sure, if one's consultancy is your "bread and butter", then a fee would be required for most work, with publication being a bonus. (I was somewhat in that situation before finally landing here in academia.)
Bill
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William Goodman
University of Ontario Institute of Technology
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