I'm not sure.
The big question is how much of the powertrain is Jaguar and how much is down to their technical partners at Williams?
Interesting how both teams have taken a significant down turn in performance this season.
Jaguar really saw themselves as leaders in electric car engineering and have invested massively to be at the top table. The development site in Coventry was looking to employ 700 engineers on electric powertrain development alone. They also threw in with Audi, BMW and a couple of others to develop a battery research facility, known as the "bat lab".
If the I-Pace series brings investment into Formula E then I would imagine it would be able to continue. At the moment there are only a limited number of options for electric racing.
The introduction of E-Cars in to national touring car racing would be an interesting move if that were to come about but for now, I think the I-Pace series has a marketable value for both Formula E and Jaguar.