Red Sox got slapped in 2017 for using Apple watches to relay signals and it was met with a milder penalty, but everyone was put on notice:
"Taking all of these factors as well as past precedent into account, I have decided to fine the Red Sox an undisclosed amount which in turn will be donated by my office to hurricane relief efforts in Florida. Moreover, all 30 Clubs have been notified that future violations of this type will be subject to more serious sanctions, including the possible loss of draft picks."
If you watched the world series video from the 2017 Astros, you can clearly see the set up and where the set up was located - there is no way this was not known at the highest levels of the organization - it was in their championship video...