That's new one for me, never considered, got to increase my MU I guess.Markup covers the time ordering/picking ip/delivering materials, as well as warranty issues. It's not "either/or"
But any markup earned for legwork has been dissolved by leaving the GC in the precarious position of having to find a replacement.
It'll take time, which amounts to money
Don't disagree with second statement if the EC is the one who backed out.