@OP Every product has to scale to a degree, for the cost of developing that product to be paid and hopefully a profit to be made.
The scale needed is determined by the net margin and volumes. Some might say gross margin but the difference usually ends up in profits.
LBT called glass substrate an 'R&D Trap' and although Intel is at the leading edge on packaging, the issue is that without the kind of massive external customer volumes normally only seen in the packaging companies themselves, Intel can not make a profit on packaging.
Optane and ALL other memory products are very similar to the issue in packaging, and in fact have lower net margins.
As a tech company, Intel from time to time has developed products which are leading edge and able to change the market for that product. The issue is that the company usually is not able to generate enough sales of that product, because it is not even adjacent to the core markets that Intel serves.
Other tech companies have faced this same issue and the answer is usually to develop the product and try to sell it to another company where it is a better fit for their core portfolio, or where they are otherwise better able to scale that product.
This is the issue that LBT is working on when he says he wants to focus on core products. ELT members are exiting as they find that the funding for their tangential efforts is being cut. An analysis of these products likely finds that few of them have any chance of being profitable and paying back the development cost.
People can call it grifting or arrogance or whatever, but really it is the cleaning up of a lot of wasted efforts, that are not a good fit for Intel or its customers. Same could be said for Mobileye, Real Sense and other efforts that have been successful. They need to be run as independent companies, or owned by a company where that is a better fit.
ELT are compensated based on the size of their org, and Intel has allowed a lot of bad product fits to be built over the years as various ELT members tried to build their empire. CEOs like LBT then come in and cut that stuff off.