If the true current India's economic power is somewhere like China during 2002-2004, India should focus on the low hanging fruit, like textile, shipbuilding, assembly line industries with enough infra investment.
But let me account how many fancy sectors you are investing:
1. Chips R&D
2. 5 Gen fighters
3. AI R&D
4. now rare earth refinery
5. EV
... ...
The outcome would be none of them would be successful or got delayed and delay. But the relatively "simple" industries like textile and shipbuilding are still nowhere compares to even Bangle or Vietnam.
China invested around 20Billion USD to a single LED maker BOE with 10 yrs. But if your government wants to invest all with few 100s millions of USD each in current stage, you might get none.
You got to be joking right or subtle racism at play here? Wasn't China already investing in 2000 era technology or at the very least forcing foreign companies to transfer the technology to domestic companies when it was just $1 Trillion economy? Even the rare earth mining China got into it faster than other countries to establish a solid supply chain thereby making manufacturing in China cheaper and attractive for most companies.
Now to the low hanging fruits you are talking about we must focus on, do you know South Korea was given the same advice by World Bank and IMF in the 1960's and 1970s. However, Park Chung Hee threw that advice in dustbin and issued domestic bounds to build infrastructure and big champions like Samsung, LG, Hyundai, etc. India already has textile, ship building, assembly line industries. We don't have it at scale or free trade agreements with big economies like US and EU to take advantage of exporting and scaling up. Having said that let me go through your points.
1) Chips R&D: We are focusing on mature nodes like 28nm and Chip design. This does not require much of incentives. And government gives only 50% project cost if they bring in a reputable technology partner. Tata got this incentive because it brought Taiwan's PSMC as it's partner. Micron is building OSAT plant and they got this incentive as well.
2) 5th Gen fighters: This is a question of national security. What it does have to do with economy?
3)AI R & D: Don't know what you are talking about. I for one believe all the shit people talk about AI is pure hype. Besides AI is vague. Elaborate and be specific by what you mean by "AI R&D".
4)Rare Earth refinery: Did you read the news recently? Your government has banned rare earth magnets which will halt automobile production. In fact, Suzuki already has stopped production. Why should anyone depend on one country for critical minerals?
5) EV: So we shouldn't have EV's now? Does focusing on EV's hurt other aspects of economy?
First support your hypothesis with data and examples. And argue why these things cannot be done before or after.