I expect this is all EU driven so don't hold your breath.
In part, you are right but don?t underestimate the interests of the petrol supply industry, Ethanol diluted petrol becomes cheaper to supply with ever-larger dilution levels. That of course will not mean that the 'end price' will be any cheaper, just suppliers becoming richer.
I am convinced that this is more driven by greed than need simply because the EU directive 2009/30/EC does not specify the percentage of Ethanol content. It only specifies the MAXIMUM permissible content which suggests that so long as there is some Ethanol added, the directive is satisfied.
There is a 54-page report, Qinetiq/10/02471, that states that the majority of vehicles 10 years and older will NOT be compatible with E10 fuel (10% Ethanol) due to fuel system materials incompatibility.
That is a huge proportion of vehicles currently on British streets, possibly as many as 9 million! according to the report. Personally, I think it could be many more.
Newer SIDI (spark-ignition direct-injection) vehicles will also be affected. Then there are the millions of petrol powered industrial, amenity and garden machines most with carburetters, this problem has enormous consequences.
(Information extracted from an article in the VMCC Journal)