Nobody is worried about Intel. They're like Apple in that they can screw up for an entire decade without running out of money and their enormous marketing/media/incentives budgets will allow them to keep shifting inferior products without any issues whatsoever. Look at desktop/laptop sales from the big OEM brands like HP/Dell/Lenovo - or every Macbook sold in the last 2 years with a defective-by-design keyboard. Intel and Apple are fine. Zen2 may be winning the performance/value/sales race at the moment but that won't stop Intel and Apple from making more profit.
There was that article at the beginning of August covered by several sites about the EU's largest retailer publishing sales statistics. One single SKU (Ryzen 3700X, and that's not even AMD's most popular Ryzen) outsold the entire Intel product stack. Very few people want to pay 50% more for a 4-year old tech with serious power and heat issues and up to 25% less performance in multi-threaded productivity tasks. For AMD to gain the upper hand, they have to do this year-after-year across all market segments. That means laptop APUs, their entire GPU product stack, their drivers and platform support, their developer tools, compilers and developer support.
I want AMD to bring full-spectrum competition back to the CPU and GPU industry as much as as the next person, but Zen2 alone isn't enough.