Shareholders own companies and a rising stock price benefits shareholders who elect the board members that run said company, a falling stock price isn't in anyone's interest who are invested in the company.

It does help with M&A, raising capital, employee stock options + bonuses.

It's rare, but sometimes you'll hear company Investors saying that their stock price is too high, like Zoom's CEO [1].

[1] https://www.bloomberg.com/news/articles/2019-04-18/zoom-vide...