The phrase "are less available" is correct and usable in written English.
It can be used to indicate that something is not as accessible or obtainable as it once was or compared to something else.
Example: "Due to the recent changes in policy, certain resources are less available to employees than before."
Alternatives: "are not as accessible" or "are more limited."
And partly because records are less available, consumers are switching to compact disks and cassettes.
"And private student loans are less available, now that a number of banks that were making those loans are no longer making them, or no longer in business".
If they're married with children, their would-be sponsors assume they are less available and less dedicated-and unsuitable for the C-suite.
In rural areas and within minority communities, educational and economic opportunities are fewer, and health and medical resources and services are less available.
Many experimental and numerical investigations have been reported in the literature for conventional pump fuels, whereas scientific findings for biofuels and gasoline-biofuel blends are less available.
And federal funds are less available to help us protect our children because of all of the billions being spent on weapons to wage an immoral war in Iraq.
Quantitative studies that explore the relationship between sense of place and residents' relocation willingness are less available.
Chelation of toxic heavy metals such as mercury (Hg), lead (Pb) and cadmium (Cd) also forms organo-metal complexes which are less available for plant uptake.
Population-based studies are less available for other chronic headache syndromes, but tension-type headache seems to be more prevalent than migraine [5].
This probabilistic method is very suitable for developing countries like Indonesia where a national standard of building code and map of building damage prediction are less available.
Although pathological processes and new therapeutic approaches in surgery are currently well known, data on risk factors for morbidity and mortality are less available.
