Modern developments have changed the insurance coverage terms, availability, and pricing. Homeowner's insurance has been relatively unprofitable, due in part to catastrophes such as hurricanes as well as regulators' reluctance to authorize price increases. Coverages have been reduced instead and companies have diverged from the former standardized model ISO forms. Water damage due to burst pipes in particular has been restricted or in some cases entirely eliminated. Other restrictions included time limits, complex replacement cost calculations (which may not reflect the true cost to replace), and reductions in wind damage coverage.