> If you do the work but undervalue it, it's likely tax fraud.
A company can value it's services as it chooses. If the work is performed for $1 or $5000 the government doesn't get a say in that.
> you do the work but overvalue it, it's likely investor fraud.
Quite possibly. Assuming this was done with the intention of misrepresenting your revenue and gaining investment.
>The vendor may have been chosen not by merit, but by its willingness to accept an exchange of services. Saying you have $X in revenue implies you won that revenue by merit.
Vendors are chosen all the time because of their willingness to accept specific payment terms and a whole bunch of non-merit pipelines via family, via golf course deals etc.