If businesses are able to teach and convey, but it takes a long time to learn, or the properties of those who will receive the knowledge must be a person who has knowledge or skills that are relatively high.
If a business can be taught and transmitted. But learning it takes a long time. Or qualifications of those who will gain the knowledge they need to possess the knowledge or skills are relatively high.
If the business can teach and transfer. But learning that take a long time. Or qualification to get knowledge will be those with the knowledge or skills is quite high.