What will be a good expression/idiom/noun form for "external problems"?

In view of:

But, (predictably) the customers do not want to pay, as they got used to getting the services for free.

From the Cambridge Dictionary

consumer resistance noun [ U ]

MARKETING

the fact of people disliking or being unwilling to buy a particular product or service:

meet with/overcome consumer resistance

The prospect of bioengineered food crops has met strong consumer resistance in Europe.