Don't assume experience is worth it, track the learning curve at your firm for all key jobs and see if the extra pay is worth it. More might be bad. There may be a point where too much experience may actually mean diminished skills or motivation. A football player with 20 years of experience might no longer be physically or mentally ready to perform. Don't assume more is better when it comes to experience.
New technology makes learning easier and faster.
Seniority means more years of experience not more performance. Customers don't buy products because experienced people worked on them. They buy them because they are better and cheaper. People that have developed habits over years often are reluctant to change their behavior. If your firm needs new ways of acting or new ideas hiring and retaining more experienced people might, in some cases, prohibit you from getting the change you need.