How Texas Instruments monopolized the US education market for graphing calculators, products with high profit margins and tech that hasn't changed in 20 years (Maya Kosoff/GEN)

Maya Kosoff / GEN:
How Texas Instruments monopolized the US education market for graphing calculators, products with high profit margins and tech that hasn't changed in 20 years  —  These $100 calculators have been required in classrooms for more than twenty years, as students and teachers still struggle to afford them

source http://www.techmeme.com/191126/p5#a191126p5