We know fab sizing is going to stop being worth it. But bigger dies, with better heat dissipation, and processors that better fit today's use cases, all that should be within Intel's capabilities.
There are some pretty hard physical boundaries. Businesses write off their hardware in 3 or 5 years, it's rare to see a machine older than that. But there may come a time when a 10 year old computer is just as powerful as one you buy today. The replacement market is what's driving Intel's revenues for a very large part and if that should ever stop then it probably wouldn't be a great idea to hold a lot of intel stock.
Oh I wish. Oh I wish..
You mean like my 2012 laptop, upgraded to 16GB RAM, which is perfectly good at web browsing, Google docs and html/python/postgres dev ?