The phrase "act prohibitively" is correct and usable in written English.
It can be used to describe actions or behaviors that create barriers or obstacles, often in a way that discourages or prevents certain actions.
Example: "The high costs of entry into the market can act prohibitively for small businesses looking to compete."
Alternatives: "serve as a barrier" or "function as a deterrent."
It is clear that such a structure acts prohibitively on quality improvements, like the on-ward deployment of hospital pharmacists, regardless of whether it is likely to improve drug therapy goals set by the ICU physicians.
Prior to our study, ACTs were prohibitively expensive and generally unavailable in private drug shops [ 31].
Walker's union-busting Act 10 makes it prohibitively difficult for unions to re-certify and has cut public-sector union membership in half in the county surrounding the Capitol.
But AI that is used to make automated decisions that significantly impact on people's lives must be transparent whether or not it acts as a 'deterrent' or is prohibitively difficult.
However, ACT is not readily available and often prohibitively expensive in SSA [6], [9], [17], [18].
In this sense, "conformity assessment" acts as a bottleneck, and can be prohibitively costly for the U.S. exporter.
Although the divorce courts set up in the wake of the 1857 Act made the procedure considerably cheaper, divorce remained prohibitively expensive for the poorer members of society.
It also supported the 1934 National Firearms Act — the first major federal gun-control legislation — and the 1938 Federal Firearms Act, which together created a licensing system for dealers and prohibitively taxed the private ownership of automatic weapons ("machine guns").
Lawyers believe that the attorney general's office is more likely to act on behalf of smaller buildings, because it recognizes that litigation could be prohibitively costly for buildings with relatively few unit owners.
Nor does it mean that the only solution is the sort of due-process law enforcement that makes it prohibitively hard, in Bush's words, "to know the plans of terrorists before they act, and find them before they strike".
