The blog post doesn't mean anything. HN is full of congratulatory posts of acquihires. They're all the same. "Now that we're part of $BIGCO we'll be working to integrate our technology into $BIGCO."
It never happens.
If $BIGCO had any intent to keep the product along, you'd be reading the post on $BIGCO's blog, not $FAILEDSTARTUP's blog.
Acquirers typically add terms to deal preventing vanity announcements and defining shutdown timeline. They don’t want the overhead of maintaining, or the negative brand hit. Each case is different, but there’s always a plan. They probably have some reason to keep maintaining the current customers/product, we can just guess what it is.
There is absolutely zero reason to believe that there is any plan to maintain this tiny product, let alone in any way to that is compatible with existing customers (if they exist).
It never happens.
If $BIGCO had any intent to keep the product along, you'd be reading the post on $BIGCO's blog, not $FAILEDSTARTUP's blog.