I never said that getting customers weren't important but keeping them is just a matter of maths... For example:
You have 100 customers each pay $220/month with a $500 Deductible and 20% Coinsurance for one year. Let's say the claims are as followed:
40 make no claims
30 make claims of up to $2,000
15 make claims of up to $5,000
10 make claims of up to $15,000
3 make claims of up to $50,000
2 make claims of over $50,000
Your income is $264,000. Your costs excluding the top 5 most expensive customers are $22,000 thus giving you a net profit of $242,000. If you include those top 5 most expensive customers you have MORE THAN $122,000 in costs with the most profit you can make capped at $142,000. So the company could lose 41% of its income because of the top 5 most expensive customers.
So if you don't think that the insurance company will do EVERYTHING in their power to either cancel these people's insurance or to delay medical care in the hope that they will die then frankly you just don't think of health insurance as a BUSINESS.
The fact is health insurance providers ONLY have customer care for their cheapest customers. As soon as you cost them money they don't care how good of a customer you've been, they will kick you out the door.