I've seen occasional articles about quants on wall street and how a good number of them are Russian/Eastern European (this kind of thing - https://www.bloomberg.com/view/articles/2016-01-21/how-russi... ) and I feel this is another directly related element - having a strong math culture allows you to have a strong CS culture.
I've been happy to see that in the last decade, the US is starting to start bringing the pieces we need to get that kind of culture back - the popularity of startups and programming with the media that bring them to the attention of the average person. Space is cool again, and movies like "The Martian" are, imo, absolutely critical in making science/engineering something worth striving for. Hopefully we'll see some of this trickle down to our educational systems in the near future.