I get a google products vibe from these sorts of acquisitions. Don't get too comfortable with that little startup! It could disappear tomorrow...
Hate to be all philosophical, but everything is temporary. Even the Universe itself.
But that is true of all services. This is why savvy businesses try to stick with services that have competition; that way they have somewhere to go if their provider of choice goes under for whatever reason.
I wonder if startups are starting to see a reluctance in users to fully buy in to trying new products. This reminds me of one S13 YC startup that got bought by Pinterest a few weeks ago..
Also, it's not like if Microsoft was shutting down. You'll be deprived of a couple of products, at most.