Because when you go to the stores you find shortages across the board with companies not regularly issuing new models for the last 2 years here in the states. You observe considerably less new Consumer Electonics because the trade shows are all shuttered pretty much. Examples CEDIA, Berlin IFA, CES. Large vendors show the same behavior with tech products. Everyone is just trying to stay afloat while their current product lines.
Apple did pick a good time to be compared to the rest of the computer tech industry with their Apple Silicone transition. At the same time they cant just stop offering Intel Solutions for enterprise, as they gradually release model successors that represent transition to Apple Silicone base computering. Apple has hit all the lower price points with their two releases (Nov 2020, late April 2021. Base on that interval, I been saying Nov 2021 is when they likely announce the M2 and hopefully shortly after the 14"/16" MBP's.