HN seems to be a bit myopic in this sense, that if something hasn't happened to an individual therefore it doesn't happen.
But not everybody here looks at the data through the lens of a VC and that is what we're discussing here.
In this thread VCs are equated with a cartel, the truth is they're all continuously in competition with each other rather than colluding with respect to making terms sheets that are worse for the companies they invest in.
Terms sheets are negotiable on a per-case basis, if you can get better terms with a different VC then you should go for it, there is nothing that is 'always done this way' and any unspecified cost can be made into a certainty by either putting a cap on it or negotiating a lower investment with the other party accepting the fees to be paid to be directed to them if that gives you more peace of mind.