1. Other posters have mentioned the strong influence that Hindu nationalists have in India. And since the election of the Modi government, they are stronger than ever. It maybe that previous governments shut their eyes to some transmission of funds, but since the Bharatiya Janata Party(BJP) won government, the Hindu nationalist organization Rashtriya Swayamsevak Sangh (RSS), mentors the government led by Prime Minister Narendra Modi. The RSS appoints a "shadow" minister to watch over everything the government does.
Its likely that the RSS is now forcing the current government to be stricter in stopping any funds from outside India, being sent into India to support non-Hindu religions, hence the present crisis for the JWs.
In the past the society always used richer western branches to finance poorer the work in poorer nations.
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2. The JW.org site has this little homily on finance. I remember that 60+ years ago, the Watchtower magazine used to say the same thing:
Our organization publishes and distributes hundreds of millions of Bibles and other publications every year without charge. We build and maintain Kingdom Halls and branch offices. We support thousands of Bethelites and missionaries, and we provide relief aid in times of disaster. So you may wonder, ‘How is all of this financed?’
We do not tithe, charge dues, or take up collections. Although the costs of supporting our evangelizing work are high, we do not solicit money. Over a century ago, the second issue of theWatchtower magazine stated that we believe we have Jehovah as our backer and that we “will never beg nor petition men for support”—and we never have!—Matthew 10:8.
Charlie Russell went a step further - as I recall, he was quoted as saying something like this:
"When the money runs out we'll know its time to stop the work!!!"
That day seems to be close!