I've been using Streamlit for roughly half a year to build various dashboards and GUIs for custom analysis scripts and I am honestly neither surprised that they were acquired nor by the price tag.<p>Our data is quite complicated and needs a lot of custom code & filtering. Even relatively simple analytical questions need some custom code, if people don't want to do almost everything manually (i.e.: Origin, Export to Excel, crop and move around data...).<p>Over the years I built up libraries and functions for some of these tasks and with Streamlit I can just slap a sufficiently nice interactive GUI on top in 1-2 hours and iterate the analysis live during a call (give them the URL and ask what additional filters, visualizations they would need, adapt the code in the background and they see the results instantly).<p>Overall, congratulations - well earned.
Also, I considered applying for a position there and regret not doing so.