If it releases on OTT, in the next minute Full HD print will be available online, and even those who might be willing to watch in theaters won't. And it impacts globally, not only in India. We know how a Full HD print comes online as soon as a movie is uploaded to Amazon Prime or Netflix in other countries before India. So no chance of releasing such a huge budget films on OTT in parallel. It might be possible for low budget films though, which can't find good number of theaters and help makers who wants to reach maximum audience.