"Relative scarcity" refers to a situation where something is scarce or in limited supply compared to the demand or need for it. It means there isn't enough of that thing to fulfill everyone's wants or requirements. Full definition
A lack of genetic variety and relative scarcity of the plants have made the three species particularly vulnerable to extinction, it said. (scientificamerican.com)
There is always relative scarcity, meaning there are always limits. (tribecatherapy.com)
This week provides relative scarcity, because 0.5 % growth is now considered a marvel to behold. (politics.co.uk)