A lot of mergers fail because the cultures do no mesh.
Some points on this:
- Culture is built around core values: integrity, trust, cost efficiency, growth mindset, customer orientation etc. It might be prudent to have a look on how the core values match together.
- Also, culture is a set of norms and socially accepted behaviours. When two cultures clash on each, this is often because of norms and behaviours are incompatible.
- Culture is not built in a day. Creating a new culture in a organisation may need time or new staff.
- Culture and behaviours are usually shaped through motivational factors and incentives (competitive, burocratic, integrative cultures etc.) It might be worth looking into what motivates people to understand the culture and align on this.
Hope this helps.