Unfortunate truth is, no matter how well boys are being paid for their services and an access to their bodies, they are being treated as cheap commodities . Very fact that customer can touch their private parts after knowing them in bar for 5 minutes or engage in sex in massage parlor 20 minutes into session is degrading and dehumanising by every name . Their customers would not allow the same to be done to them.
Difference is only in compensation. It may be customers impression that 5000 baht tip soothes guys better than 1000 baht one. Boys in question may have different or at times even opposite ideas. Boy with low self esteem may be happy with his 1000 while other , oiled with 5000 may still consider it self imposed insult to himself.