The phrase "doing so entails" is grammatically correct and can be used in written English.
It is often used to introduce a consequence or result of an action. Example: "I have been considering quitting my job, but doing so entails finding a new source of income."
There is a natural temptation to "hedge" but doing so entails significant risks.
Doing so entails two primary responsibilities — and they are not easy to get right.
It is in the nation's broadest economic and security interests for the Bush administration to reassume this leadership role, but doing so entails offending powerful farming interests -- cotton and sugar lobbies, for starters -- that stand to lose if forced to compete fair and square against foreign farmers.
Doing so entails more than simply adding a 10% or 15% stake in a diversified international fund.
Doing so entails looking both at the ongoing influence of the external structure of opportunities, and at their changing potential and volition to achieve their aspirations.
It is impossible to justify repealing Social Security to stop the government's stealing from one group of people if doing so entails perpetuating the theft on another group of people.
To do so entails a public condemnation of society and government alike for failing women, but to talk of politically motivated sexual assault is to primarily hold the Muslim Brotherhood accountable for using it as a political strategy for eliminating opposition.
We also should recognize that to do so entails a form of diplomatic engagement largely alien to our accustomed modus operandi.
The plan would be voluntary; a homeowner could simply refuse to participate, and presumably elect to rebuild, despite higher insurance rates that doing so would entail.
As we report in this article, Mr Obama's bipartisan deficit commission has now sketched out some of the painful choices that doing so would entail.
But their increasingly urgent pleas that society find a way to limit emissions have met sharp political resistance in many countries, including the United States, because doing so would entail higher energy costs.
