I don't think it is a problem with someone like Emirates, though. There is no time limit for the life of an aircraft. But there comes a point when it is not economical to maintain it. Then the airline will sell it to someone who pays less to maintain it. That is when the temptation to use cheap, fake parts becomes too hard to resist.
Counterfeiters tend to copy the simplest parts, such as nuts and bolts.
A basic steel copy will cost only a few cents to produce, normally in back-street workshops in the Far East. Someone might be producing components which might not be up to strength. It might do the job, but it might not do it more than twice. Companies such as Boeing spend millions of dollars tracking down unapproved parts. But Armstrong admits that they will never eradicate the problem completely, and acknowledges that ultimately, it is the manufacturer's reputation which suffers.