I can't read your link as it's behind a paywall.

But here's one with unrestricted access [1]: big pharma spends in average 17% of their revenue on R&D, while Apple spends 3%.

[1] https://www.investopedia.com/ask/answers/060115/how-much-dru...

Edit Here's another link that states the average for Big Pharma for 2018 was 20%

[2] https://www.fiercebiotech.com/special-report/top-10-pharma-r...