As an IT business consultant, i always use Michael Porter's Competetive Forces Model to assess whether a firm's e-business strategy will give them a competitive advantage against competitor's.
The competitive forces model identifies five forces in the industry that a firm needs to contend with to become successful. These forces are the:
1) Bargaining power of customers
2) Bargaining power of suppliers
3) New entrants into the market
4) Substitute products and services
5) Existing competitors
Assuming the WTS is a business and the product is the JW association and teachings. Why will apostates fail to compete with the WTS? Let us examine them one by one.
FIVE FORCES
Bargaining power of customers (the members)The 'switching cost' is to high. If a member leaves the WTS, he/she will suffer from being disfellowshiped and loose friends and family.
Bargaining power of suppliers (the apostates and other denominations)
The apostates don't really have a tangible product to substitute the WTS product. All they can do is try to prove the WTS is wrong, that's about it.
New entrants into the market
There are no new religions around to match the WTS product.
Substitute products and services
Substitutes products (hellfire, immortality of the soul, trinity). JWs have learned to reject these doctrines. It is hard to deprogram them to embrace it again.
Existing competitors
Roman Catholic Church, Mormons, Seventh Day Adventists, Salvation Army. JWs are programmed to view them as false religions. It is hard to deprogram them to embrace it again.
OTHER FACTORS
Marketing
Zealous evangelizing of the JWs will only enable them to recuit more members as time goes by.
Medicine on their side
For the blood issue, alternatives are coming up and the field of medicine is now buying the idea of bloodless surgery.
Past mistakes of interpretation
The JW GB are now vocal in their admission of the past mistakes they did. After all, they are only humans.
Management styleAs the management is changing and getting younger in terms of age, old 'beaucratic traditional culture' is slowly changing to a more relax management style.