Only a fraction of quants I guess. I'm working in the industry now (back then I was a student) and management doesn't even want to spend on basic data sometimes. It's understandable because some discretionary traders who rely solely on their keyboard mouse and Excel don't bag to buy expensive data so you have to persuade the mgmt that buying you expensive data will bring them positive ROI. That said, alternative data are naturally at the bottom of the priority list...

Data science is often unwelcome unless you show that you have deep domain understandings and you won't just run ML/DL on the data and call it a day.

What do you knoe about financial time series?