More or less the way I figured it would go. The longer the strikes go on means longer without new product being made which is going to cause the Suits to become very irate.
But the Suits are the ones to blame for it. The unions would've been happy to return to the table any day; it was the execs who decided to play a waiting game and refuse to negotiate, because they care more about crushing the unions than resolving the strike. After all, the execs profit even if their companies fail, so they don't care if they fail.
What Serveaux is saying is that it's the stockholders who will be irate at the Suits for their stubbornness.