Note that any sensible analysis of a pipe support design comes out the same whether safety or profit motive governs the design. Sample economic analysis for a shoe in a refinery:

Man-hours per support design: 4
Engineering billing rate for pipe stress analyst: $75 to $125
Cost of material: $2
Cost of installation labor: $35 to $60
Total cost: $337 to $562

Potential economic consequences of a support failure: $2 billion

Required design reliability: ($2 billion - $562)/($2 billion) = .9999997

Since guesswork is not going to produce a design to anywhere near that level of reliability, an engineer who understands risk analysis properly will engineer the support. And an owner who is investing $1 billion to build a (small) refinery will pay him for it.

Engineers who do not understand risk analysis usually end up working on less critical tasks.