Many years ago, when Adobe bought Macromedia, they acquired a tool called Fireworks[1]. This was a combined bitmap and vector editor that was incredibly well-optimised for user-interface and web design, at a time when most designers were paying exorbitant license fees to do such work painfully and slowly in Photoshop and Illustrator. Fireworks was cheap, powerful, and hugely ahead of its time. Many of the features and flows people love in Figma and Sketch were pioneered years earlier in Fireworks.
After the acquisition, Adobe starved Fireworks of resources and marketing. They broke things, left major bugs and performance regressions unfixed, and eventually discontinued it altogether. I'd argue this wasn't simply negligence, but a calculated decision to kill an innovative product because it threatened the profits of their cash cows.
As much as I hope otherwise, I believe the acquisition of Figma will go the same way. Once it's under the Adobe umbrella, the simple mathematics of profits from Photoshop and Illustrator vs. those from Figma will result in the latter being starved, stripped of functionality, and eventually left broken.