That is probably because LinkedIn Authwall algorithm is on A/B testing, they do lots of machine learning so that they stop bots, but mostly scraping Linkedin is quite impossible i would say even on small volumes

It would be interesting to know what technologies they use to scrape on high volume for 0.005 US cent a successful request. I checked this package and it looks decent, i like dependency free libraries. I'll check their API for Bing. Thanks

I find serp api very interesting but the big data plan is very expensive still for medium size companies. Does it really work for Google?

just scrape startpage.com