Well there was a fantastic feature of trumpet that windows lacked: If you had to reboot your computer (lol windows), the modem would remain connected, and trumpet could be re-enabled when the computer launched, you would be back up and running with internet, having not had to re-dial. Windows never did that, if you rebooted it was another phone call.
As far as Peter and Trumpet Software, they were based out of Hobart - After Windows implemented a default TCP/IP stack, much of his core business disappeared, they mucked around with building their own operating system for a while, turned Trumpet into an ISP, and in the end, his wife took him for most of what he had. Messy divorce/bankruptcy. Poor guy, he created a piece of software that I used for many years. For a long time, the trumpet implementation was better than the MS implementation, I still used it even when windows had built in PPP facilities.