duchesse, I think choice always was and certainly will be an illusion because choice can only exist as long as there is spare capacity in schools - which is not economic to the taxpayer. A half empty school will never be able to compete with a full school in being able to offer a wide range of subjects and also be able to set pupils in different ability groups, and certainly not if there are other complex special needs to be met. It would have to shut, or be handed over e.g. to the Harris chain and parents have even less of a say in how the school is run.
Secondly, LEAs do not decide where pupils go - over a third of schools are now converter academies and where they inherited a favourable catchment or admissions policy they will retain it - this does not give parents any more choice either.
The divide between converter academies - including schools with middle class catchment areas, as well as grammars (80% of which have converted) and sponsored academies is already wide and sponsored academies have three times as many on free school meals. This government is not about to allow chains to fail and weaken the case for profit-making by giving poorer children the option to avoid academy schools. Neither does it seem to want to even out choice - 20% of secondary pupils continue to select faith schools (which not all can access) and 6% continue to go to selective grammars, now converter academies.
Neither the profit motive nor over-capacity would be good value to the taxpayer - they would not improve choice or save money overall, just redistribute it.