The power and range is already here for the competition, it just takes 'volume' to bring down the unit price. Which is why the Model 3 starts at $35k today, but at 10k weekly production by 2019 it drops to $28, which should put a dual mode performance model at about $40k. And it is in chasing those rainbows and unicorn that is the power behind all innovation and advancements across industries. No one innovates at a profit.....it is an investment in future profitability. Tesla has just expanded that envelope more than any other automaker dared to do, and a few now trying to catch up, and others like Ford timidly waiting for their safety net, after others have led the way. But this is consistent for Ford, who is more comfortable in the midrange with innovation, not on the leading edge, but trying not to get left too far behind. Unfortunately for Ford, the auto industry is blending with the fast paced technology industry, where you are either one of the leaders or you fade away.
I know, Ford has to play it safe because they mad bad and slow decisions and now don't have the cash to fund the EV push without dropping out of the car market for several years, unable to fund a generation of cars. Everyone knows that story. But it is also necessary to understand that every action moving forward is hinged on that failure. So no, battery tech is not to immature, it's just Ford's version of the battery tech that is still too immature. And Ford has waited too long to move forward with EV technology banking on hybrids instead, trying to hold on to combustion engine profits as long as possible, While making a last ditch effort at more SUVs right as gas prices begin to spike long term globally, sending more consumers toward EVs.
As a combustion engine company, Ford does have a disadvantage compared with a new EV company. Which is why it would have been better if Ford would have launched a separate EV only company, instead all the 'mobility' distractions, ramped up technology, platforms, products, charging infrastructure and production so they are prepared to compete directly with the EV competition globally, while transitioning their ICE business products as the market dictates over time. Because every year that Ford does not have production EVs out on the road in customer hands, driving them, the further Ford gets behind with the technology, market/investor perception and penetration. Dropping out of the EV business for 2 years will hurt, and again give Ford another hill to climb, just like dropping out of the small pick-up market and having to re-enter. But this time they won't have an established model to use to re-enter the market, and just using names from old ICE models won't get them there.
About those 2 years for Ford without a pure EV , those are 2 years without big loses. Let Tesla burn their money. When the EV will be ready to be commercialized with profits, there will be Ford in the business.