Why is there no global language that at least nearly half the world speaks (3.5 billion, I'm talkin', including non-native speakers)

Is the Tower of Babel still affecting us or something?

Edit:

We have 8 billion people, yet the best we could muster for the most total speakers of a language is under 2 billion, including non-natives...

1. English (1,452 million speakers) First language: 372.9 million Total speakers: 1.4+ billion According to Ethnologue, English is the most-spoken language in the world including native and non-native speakers.

https://www.berlitz.com/blog/most-spoken-languages-world#:~:text=1.,English (1%2C452 million speakers)&text=According to Ethnologue%2C English is,native and non-native speakers.