1, India's trade self-protection.
In order to promote trade between countries, RCEP is committed to reducing tariffs and eliminating non-tariff barriers. As far as India is concerned, it is worried that if there are no restrictions on tariffs and other barriers, Indian products will be uncompetitive and will eventually damage India's industrial system and economy. For example, I am worried that cheap goods in Southeast Asia will lead to unsalable, poor quality and high price of Indian goods; For example, I'm worried that agricultural products from New Zealand and Australia will hit farmers in India.
The Indian government is too selfish.
For the reason why India did not join RCEP, Modi of India said the following:
The current RCEP agreement does not fully reflect the basic spirit and consistent guiding principles of RCEP, nor does it satisfactorily solve India's problems and concerns ... India cannot join RCEP.
This passage fully reflects the selfishness and lack of overall sense of the Indian government. It can be seen from this passage that India only emphasizes India's interests. What the Indian government means is that by joining this system, India only wants to enjoy the benefits, but refuses to bear the corresponding responsibilities.
India tried to please the United States.
The United States never wanted the establishment of RCEP, because it was detrimental to the interests of the United States. Now India's policy is to get close to the United States and use the United States to develop India's domestic economy. Since the United States opposes it, India will follow suit in order to please the United States and win its economic and technical help.