Please beware the way you report incidents. Pilots always check Airspeed indicators at some point around 80 kts when they are indicating something sensible, and this is where the problem would be noticed and the stop decision made, not 'almost on lift off'. Where did that estimate come from? It was not 'the flight deck' that told the passengers what it was, it was 'the pilots'. You have made a false report then finished off with a conclusion: 'Obviously it took some time for the problem to manifest itself'- well, it takes time if there is an airspeed indication problem because they take a little while to start indicating correctly, and by 80 kts the pilots will check them.
Please stick to basic facts without drawing any uneducated conclusions.