To summarise the situation, I think that the quality of your net connection (and this isn't unique to Hathway - it's every ISP) is hugely dependent on where you stay. Your location determines the following:
1. Your cable operator - he usually is the big bully and can stop entry of competitors in an area. If he is offering Hathway then he can cut them off at the drop of a hat. The only people immune from the cable operator muscle are MTNL (Even
Tata and Airtel can't stand up to the cable operator). With MTNL, you can't be sure if they care.
2. Your distance from the exchange - the MTNL people will identify with this. The DSL and VDSL experience is significantly differently depending upon how far you are from the exchange. Also MTNL Fiber-to-the-home is a bit like the Yeti. Everyone's heard of it but noone has quite seen one yet.
3. Your ability to get minimum subscribers - If you are looking at getting a new connection into the building, you need to have people who are similar minded. You will find this blog site full of people who have expressed frustration at ISPs refusing connections because there aren't enough people to service.
4. If the pricing works out - This one is slight difficult to understand as most people here wouldn't have faced this problem. Apparently ISPs refuse to give service in some areas on the pretext that they don't think the people from that place will pay as much for the service. A simple answer would be to make a connection request confirming your ability to pay. But that is when point 3 comes into the picture. It's a vicious circle - you can't get a connection because there are not enough subscribers and you don't have enough subscribers because there is no connection.
Therefore, getting an internet connection is like running a hotel. You need only three things - Location, Location and Location.