Why do some people think Motivational Keynote Speakers’  methods
are not enough to help a company long-term?

Motivational speakers are known to tap into the emotions of their audiences.  Some people feel that the value is short-term and hard to measure.  What’s important is that the company adopts the message of the speaker, making it a part of their philosophies.  When this occurs, the speech takes on another level of value to the audience.