Sentiment over time by category?

The Amazon hate really seems cranked up to 11. Is there a free way to track company sentiment over time and by a category (like github developer)?

I'd post the repo but I think it gets filtered. just replace the with the expletive

https://github.com/dmehrotra/fk-off-aws

I'm asking as an investor and wondering if there are tipping points which can influence stock price trends and company valuation.