1/ Been thinking about Amazon recently. One of its big advantages is psychological. Lots of people are simply afraid to compete with them. It fuels a fear flywheel that clears out the competition. I think the brave and crafty will use it as an opportunity. Judo-amazonomics?
The big tech strategy of creating ecosystems across markets has become a subset of monopoly, limiting consumer choice + competition, and substantially raising barriers to entry. Look up acquisitions of GOOGL AAPL FB sometime if you want to see what’s happened to the competition.