I used to drive but finally gave it up when my employer changed the way they compensated commuting expenses. Now, I take Boston Express Bus which costs me $315/month. The buses are always over full. There's probably about $100K per month for the Bus Company just in work day commuters. They also do a large number of air port runs through out the day.
The problem with the buses is they go to a train/subway/bus station on the south side of the city. But, many (if not most) of the commuters work on the north side of the city. So, they have to buy an additional $65/month subway card and waste an additional 45-75 minutes a day travelling through the congested city to get to and from the buses. Using the subway system in Boston is even more miserable than driving because it is horribly managed and badly maintained. Most riders would love to avoid it.
Instead of doing local uber-like shuttles in a city already over served by subway and bus routes that compete with each other (in additional to taxis, uber, employer shuttles, etc), Bridj could have charged $350-$500 per month per person to do a run from southern NH with a Kendall Square drop off and pick up. People would have loved it. Similar routes could have been set up from the South and and West. I think they easily could have done $300,000 to $600,000 per month in revenue with that model.
It's a shame they didn't take a good look at the market. The roads in and out of Boston are hopelessly overloaded. They could have made a ton of money and improved people's quality of life significantly. I assume many other large cites (SF, LA, NYC) are the same. Employers locate in the large cities and don't pay their employees enough to live in the cities. That is a problem calling out for a business like Bridj to address.