You've already broken rule one, idiot. Stop telling people things! You're going to regret it!
Quite.
Even if it successfully synthesizes, there is no guarantee that it will be in any way an optimal implementation.
However, if it does synthesize into something runnable, then you've just proved an upper bound for the cost of the implementation. If the upper bound is in any way commercially feasible then it's definitely worth optimising.
The engineers were working on a work-for-hire basis, and they knew it. What they get is no different to what an incidental musician or a member of a pub band would get: An hourly wage for their labour.
Musicians who write albums and then publish them, receiving ongoing income, are more analogous to an inventor or a startup company, who design a product and then market that product, making money off the ongoing sales.
The musicians that you refer to, who work for a few years and live the rest of their lives on the royalties from that music, are the equivalent of the guy who invented and popularized the Tetra Pak milk carton.
Your computer account is overdrawn. Please see Big Brother.