The problem with the P180 was the buy in cost, not the noise.
They made it work by selling shares, which was found out to be a pyramid scheme.
Great design, just over priced. Plans to put some Williams on the wings are in the works, but the market being what it is, killed the SJ30, another great design, but bad company financing and pilots to slow to step up to high performance corporate aircraft has been problematic. Reminds of the Mu2. A capable aircraft, but an industry full of tards bad mouthed it.
We should be busting the speed of sound right now, but the industry is still stuck in the 1940s. Sucks.