I really hope google will buy twitter so it can put back real time search in twitter stream a few years ago as an experiment.
Currently the whole TWTR management is looking to please short-term "investor" and "speculator" scum.
Companies don't exist for 3-month intervals and maximum gains, they exist for creating LONG TIME wealth (and that's the mistake Capitalism does).
Existence inside a huge, rock-solid company frees management from the cognitive and financial round to be hyper-effective for capitalists instead for their users (who actually create the work that makes Twitter exist).
It doesn't really matter if the "God" is Wall Street or a holding company like Alphabet.
Only that I'd trust a holding company to be forced to maintain the company in order to not risk its value. A stock holder on Wall St just wants as much profit as possible as fast as possible, and if it goes bust then you can always sell shorts and still profit.
Google has killed off (or left to rot, and then kill off) projects with huge user counts/business outlooks in the past... remember Google Reader and Google Code?
Both could have kicked Feedly's and Github's/SF's asses multiple times over with a bit of investment, and Google basically let them rot until the backend of Google's infrastructure changed too much to justify the needed adaptions on the projects.
Most startups would kill for a million highly engaged users.