David Marcus' plan for Messenger in 2016 as it hits 800M MAUs: eliminate the need for a phone number, build app functionality into chat threads
Facebook Messenger Hits 800M Users: 2016 Strategy And Predictions — Kill SMS, spawn a chat bot platform, bring friends together offline …
Context & Ripple Effects
Marcus' 2016 roadmap is the execution phase of a strategy Facebook laid out through 2015: the March decision to turn Messenger into a developer platform explicitly modeled on Line and WeChat, followed by his October argument that Messenger should be 'the app for everything.' Killing the phone-number requirement and embedding app functionality into threads are the user-facing halves of that platform bet.
The pieces interlock with earlier infrastructure moves — Message Requests replacing the Other Inbox already lets non-friends reach users without contact details, so dropping phone numbers removes the last dependency on carrier identity. The 800M MAU milestone is the scale argument for why developers should build here rather than on standalone apps.
First-order effects
- Users gain a way to use Messenger as their primary messaging channel without ever sharing a phone number, directly attacking SMS's role as the default contact layer.
- Developers get a mandate to put app functionality inside chat threads, shifting distribution from app stores to conversations Facebook controls.
Second-order effects
- Line and WeChat, the pioneers Facebook openly benchmarked against, face a competitor with far larger reach copying their platform playbook — differentiation shifts to monetization and regional lock-in.
- Carriers and SMS-dependent services see further traffic erosion as Facebook decouples messaging from phone numbers entirely.
Third-order effects
- If bots and in-thread apps stick — the April 2016 chatbot platform launch and 2017's Chat Extensions suggest Facebook kept investing — messaging apps become operating layers where discovery, transactions, and services happen inside chat rather than in installed apps.
- Identity migrates from carrier-controlled phone numbers to platform-controlled accounts, concentrating gatekeeping power over who can reach whom in a handful of messaging companies.
The trend: Messaging apps are evolving from communication utilities into developer platforms that absorb app functionality, commerce, and identity — with Facebook racing WeChat and Line to define the category.