You can offset internal Rd investment with gov money and use that elsewhere, sure, but when the magnitudes are large and immediate, that doesn't play. You get one check, and it better be spent on the intended cause in X fiscal years or you pay it back.
The tech community has suffered under the Cost Plus and other workaround bullshit for long enough that the cynicism is inbred. But there's plenty of gov funded RD money that does precisely what it was invested to do.
To put it another way, it’s similar to the futility of those well-meaning people who give some homeless person $5 on the express condition that they spend those $5 on food, not on alcohol or drugs. Which said homeless person is all too happy to do, he/she will gladly spend those gifted $5 on food, which leaves the other hipotethical $5 which he/she had in their pocket all available for buying drugs or alcohol, money which otherwise would have been spent probably half and half (2.50 on food, 2.50 on drugs).
At least in the counter-example I gave the result of largesse is a homeless person better fed, which is good (and also more intoxicated, which is not so good), but in this example with Intel you have taxpayers filling the pockets of one of the biggest tech companies in the world.
I cannot claim authority over all instances of gov funding, but I have managed funds from the government for Rd use and they absolutely do audit, and they absolutely do require an accounting down to the last penny, and they absolutely do review plans vs actions. And they absolutely do get refunds for money not spent. And, critically, they absolutely do shutdown follow on funding if they do not like what they see.