It could certainly be commercialized if the company making the product funded exit node servers to offset the increased usage from their customers (X gigabytes worth of exit node traffic capacity for each customer or something).
Some Googling reveals https://www.torservers.net/ which seems to be an European (German) charity that runs exit nodes and relays you can donate to and they seem to be funding a couple Gbit worth of exit node traffic ( https://www.torservers.net/exits.html ) plus some relays.
I'm sure there are other exit node providers that one could donate to also. And of course, there's always the option of setting up your own exit node on a VPS -- find a Tor-friendly ISP and installation is basically an 'apt-get install tor' away (default configuration works fine). I run a few relays myself on my servers and it uses very little system resources and bandwidth is cheap.
