lets answer the worlds most asked question:
Is it profitable to turn antimatter into energy in Belgium today?
if we take into account the energy density of antimatter per gram, 89875517.874 megajoules (https://en.wikipedia.org/wiki/Energy_density_Extended_Reference_Table)
And the cost of a gram of antimatter, $62,500,000,000,000 and that the price for a megajoule in Belgium is 8.08 (euros i think), which is $9.53,
one gram of antimatter creates (with 100% efficiency, which is just no) $856513685.339 (megajoules per gram for antimatter * cost for a megajoule in belgium)
if we compare the two numbers:
856513685.339
62,500,000,000,000
one is a lot bigger
so, the answer is no