Anthropic, OpenAI and the rest have benefitted enormously from open source software. 

Do we see them giving anything back? Does anyone using their tools to work on further OSS for the public good get any kind of discount?

No, we don't. These companies are parasites. Symbiotic parasites at best.

Established 1968. Cast about parenting, life in 🏴󠁧󠁢󠁷󠁬󠁳󠁿 South Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿, coding, being older than most around here and general nonsense.

My previous employer used OSS massively but never contributed back. Their excuse was concern over liability for contributions but that was / is a poor excuse.

Worked in Tech ( Finance ) for years, I also do music festivals and live music.