There's a particular kind of frustration reserved exclusively for private aviation — and it doesn't involve ATC delays or catering mix-ups. It's the sinking feeling you get when you've just signed off on a multi-million-dollar cabin refurbishment, your beautiful new IFE/CMS system is certified, installed, and humming along… and six months later something shinier, faster, and more jaw-dropping has already appeared on the market. Welcome to the perpetual motion machine that is