Companies don’t step up and do things for the common good. They do things for profit. Occasionally that looks like they are charitable if the value of the PR is worth it for them.

No one[1] changes what product they are using based on funding or not of open source software. Companies will step in and fund it if they want control, like with Rust, or if the maintainer finally stops giving them free labor and they actually need the software.

[1] not enough people to alter finances