Alta has to very careful and deliberate every step of the way. There is a fine line between what they have achieved and all of the other players including HD, having the tech to duplicate Alta's engineering.
Once the genie is out of the bottle, all the other players may be at an advantage with extensive dealer networks already in place, manufacturing partners etc.
To be honest, I would not for a second dismiss HD as being capable of building a top notch electric dirt bike. Racing has been part of their heritage. They are still involved in flat track racing and MX/Enduro racing would be a venue they could actually go head to head with any of the other companies with the right electric tech. There would be an awful lot of people wanting a bad ass Harley electric MX bike.
IMO, in 3-5 years the flood gates will be wide open and I think when that happens the racing organizations will open up the field to non ICE bikes. They are going to dominate the landscape.
I may be wrong, but I gotta believe Alta is thinking these things too and may be waiting for the right time to find the right buyer to sell their tech to before everyone figures out the controller/software tech. It seems like it's only a matter of time. Whatever way it goes, my hat is off to them for what they have accomplished.
P.S. I still plan on getting an EXR next summer. At 53, I can't afford to wait!