Of course oil co's want to block this
Oil co's control bottleneck technologies to slow the speed at which disruptors can roll out into the market. Of course they do this. It's their mandate - to maximize stockholder equity. If they were to expedite battery technology and decrease oil profits, they would be sued by their stockholders. There is no good or bad. There is only profit. And if buying up disruptive patents and technologies in order to shelve them is unethical but profitable, they are bound by law to be unethical. It's pure wish-thinking to believe otherwise.