Since you don't agree with the ethical side, think about it this way: if you're not known in the industry for paying bonuses for successful projects and inventions, why should any brilliant engineer look forward to work for you? Not to mention that there will be no motivation among your employees to perform more than the absolute minimum work required to keep their job.
Consider whether you would like to own 80% of a failing company or 30% of a widely successful one.
Consider whether you would like to own 80% of a failing company or 30% of a widely successful one.