I am not sure where you are getting that electric cars are cheaper? They never will be unless there are broader adoptions and mass production. Most people who have driven electric cars hate the energy anxiety that comes with it. Turn on the AC and power efficiency drops. Cheaper electric cars have lower ranges. Besides having electricity does not necessarily mean that electric cars have better future. The world has electricity for nearly a century. People do carry power banks for their cell phones.
The primary motivation for electric cars is that they provide a cleaner option. Without clean sources, wide adoption of electric cars just means more pollution. Coal pollution is worse than gasoline based pollution. It will take India at least 20 years to get the majority of its electricity from clean sources. Keep in mind that clean sources are not necessarily cheap unless we are getting into nuclear energy, which also requires significant investments and addressing of liability issues.
While there are fast charging stations that are available, it takes 30-45 minutes to charge these cars at these stations. For most people, they will have to charge their cars for 8-9 hours. Now, just look at where people park their cars in India, you need a charging station there. You need to ensure the stability of electric supply and secure the station so that people do not steal electricity. You may need a separate electricity usage meter there as well (for billing). In most high rise buildings where cars are parked away from people actually live, you may need a lot of construction work.
More importantly, the hybrid alternatives (gas-electric) are available for nearly 2 decades in the US. Despite high gas prices, no one likes them. These cars have to be light to increase range. Despite government subsidies, not many takers yet. There are outlandish predictions, but that is how it is in America.
The way I see it is that these whole electric automobiles are government imposition of a product on its citizens. It may not work in the US but it may work in countries where governments tell their citizens what to do and what they should buy.
I have used electric landscaping products (saw, mowers, etc.) and they are a joke. Most gasoline fired equipment will give you full energy till the last drop. Electric equipment drops power by nearly half when 25% battery power is left. This crap may be fine for developing countries. People are used to problems so a new problem may not seem like a big deal. Companies may advertise that cars can go from 0-60 in 2 sec. Try doing that when battery is 25% full and numbers will be way different.
The only electric equipment that works well is the one that is connected to a power plug and not the one that runs on a battery. That is how it is for electric train engines and trams.