The people who stole these slides remind me of a child who cheats at spelling in primary school.
They may do well in tests, but as soon as they need to actually spell something they'll have no chance (hope my spelling is ok, by the way).
The other issue is that someone who would steel like that. Would probably also have other ethical shortcomings. For example they may have no problems ripping off customers, employees or suppliers. Some people may think that is good in business. I don't.