It’s been a week of contrasting fortunes for pure-electric racing. Both BMW and Audi confirmed in quick succession that they are planning to leave Formula E – creating a predictable pile-on of by those predicting that this marked the peak and imminent decline of the combustion-free race series.

Then this morning, confirmation came that Lewis Hamilton’s X44 team in the forthcoming Extreme E electro off-road spin-off has signed Sébastien Loeb for next year. That’s one world champion driving for another, a level of star power it’s hard to ignore and proof of both the interest and cash that the new series has been able to raise before it even starts.

Regardless of your feelings for combustion-free motorsport, the truth is that neither Formula E nor Extreme E were created to be direct rivals to traditional racing. Series founder Alejandro Agag is a very canny operator with different priorities from the large car companies, who were always likely to come and go according to different objectives.

“It is always better to create a platform where you can survive long term with independent teams,” he told me earlier this week. “Many OEMs want to join, but normally they are temporary guests in any championships, with a few exceptions.”

Tellingly, despite the serious amount of money behind the new series and its mission to highlight climate change through racing, the only manufacturer in Extreme E is Cupra, although Agag says others are likely to join in later seasons. He also thinks that the decision to insist every team has both one male and one female driver, both sharing the same car, will help broaden its appeal well beyond the normal motorsport audience. Like Formula E, every driver is getting paid – “and paid very well” according to Agag. There aren’t many motorsport series in the world that can say that.

But Agag also knows that the automotive world is moving towards him, and that he holds what could well prove to be a hugely valuable trump card: exclusive rights to run an FIA single-seat electric championship for another 19 years. Well beyond the end date for combustion engines in most everyday cars. If senior race series want to maintain relevance to road-going technology – and take money from those fickle car companies – they are going to need to make an accommodation.

“Formula E is very different in terms of the level of prestige and audience to Formula 1, but I still think the future is a merger between them,” he said. “I don’t know when this will happen, and if the shareholders will want to do it. But I think Formula 1 needs to transition to electric, and if it doesn’t do something with Formula E, they can only do that in 19 years, because that’s when our licence ends – supposing they get a licence – and that’s too late. We got the rights for 25 years. We’ve done six and we have another 19.”