He had a particular niche that had few requirements on complex networking, and a business plan that was so brain dead simple it could be achieved easily.

But yeah, really nice guy but unable to expand beyond that paradigm.

I once helped him deal with a fibre ring, where there were 5 sites in the ring, but only 2 internet services. So sites 3, 4 and 5 had to communicate via sites 1 and 2.

His team had put a sophos firewall, with NAT, and no routing, on every fibre connection and called me when it didnt work.