THE END OF THE 1 BILLION ACTIVE USER AD-SUPPORTED CONSUMER STARTUP - AND WHY HIGHLY-MONETIZING, USEFUL, VERTICAL APPS ARE THE NEXT THING

Summary from the TLDR newsletter

It might not be possible anymore to create a broadly horizontal consumer app. Easy growth is mostly over and building an ad-supported business is harder than ever. The next generation of apps may be 'vertical apps' that appeal to a vertical market segment with smaller audiences but higher 'whale' monetization. These apps will be focused on solo, useful interactions and may target productivity/utility use cases.