Comment by riku_iki
that list is catchy, but if you dig into details, there are many caveats, for example many product were not killed, but replaced with low friction, for example hangout, many products were created at period of time when there was that google labs which launched many strange low quality products which never gained traction.
If you check some core business products (ads, cloud), google usually provides reasonable deprecation timeframe (years).
True that google never depleted us from messaging apps; at some point they had 3 different in operation, with contradictory statements about which one was made obsolete by some other.
Which also illustrate that a stable business does not imply a stable product.