From manufacturing POV it’s tremendous benefit to food companies.
Researches of algae fuel / oil / food were active primarily during high oil prices. We are in the relatively cheap oil phase, but thankfully many studies have started in 2007-2013.
As I see from sources there are numerous competing technologies and industrial processes of production, extraction, and efficient nutrition of algae in factories.
I still don’t see any signs of unified and optimal production in the next 10 years, because each commercial and pre-commercial producer enjoys its unique situation (free factory space, free funding from specific grant, easy to get filtered wastewater, relatively cheap CO2, etc.)
It’s definitely future, but it reminds me the state where wind and solar energy was 15 years ago with 0.1% share of energy market with totally different approaches and methods. It will take us till end of next decade, when we will see algae factories of commercial size raising in different countries using same optimal technology.
Till then it’s highly fueled by research money, excessive funding, and local preferable conditions - all of what is not sustainable in long run and not even close to be self sufficient if left alone on fair and equal play-field.