Just last year, Twitter’s market cap was more than double what it is today. Since then, they have managed to grow revenue by 48% while reducing the losses by 9%. So, with all that, I think $29B is a steal for the acquisition.
EDIT: my last response here was uninformed.
> And speaking about science fiction, what will Alphabet/Google do to turn around Twitter?
Clearly you have not read the post, and are jumping to conclusions.