Why Physics Wallah is profitable, when other ed-tech giants are failing???

Physics Wallah is making profits at a time when literally almost all ed-tech startups are failing, because of the quality of its products (not just low pricing). Byju's & Unacademy products look fancy but lack a holistic ecosystem of products (lectures + assignments + doubt solving facility + test series) to crack a national level competitive exam. So even if you buy a course from Byju's/Unacademy, you still have to buy other products (like a proper scheduled test series) from other platforms, to crack the exam. But PW has all the products required for a test prep ecosystem platform. If you buy a PW course for a given exam, then you get access to all the resources you need on a single platform. Then the pricing comes into play. With almost 1/10th of the price compared to others, it enables students from even the lower income strata to subscribe to PW. And here comes the final nail in the coffin- many students who have already bought courses of other platforms still buy PW ...