I don't know about India. I practiced architecture in the US for more than a decade, am still professionally licensed, and came into the AEC industry in 1989. In the US, the "near zero dollar" market is reasonably well served by engineers with established relationships with contractors, architects, owners, and building officials. It's not uncompetitive.
Or rather, the many many local "near zero dollar" markets are generally served and somewhat competitive. There are MEP's already on the ground pretty much anywhere there is work. That's also the case with the national "near zero dollar" market and everywhere in between.
Which is not to say that what you are doing won't work. But it's probably going to be high touch sales and not self service. Too much money at stake in construction. Too many problems that occur during the process from inherent complexity, misunderstanding, and human fallibility. When things go bad, relationships make the difference.
In the US, you're not up against costs. You're up against relationships. Relationships developed over many projects and many years. Low cost probably won't buy you arm's length.
Ya, so I am also an Architect, practiced in India and Middle east.
I know that their is lots of complexity, human fallibility, many problems during process that's why our software comes in place to minimize these efforts,human errors involved in workflows, so that one can concentrate on solving and designing the project.
So, right now we are using the software in-house thus producing projects and getting feedbacks from various customers and accordingly developing the tool, the main vision is to make it SaaS, then relationships would not be a big issue.
In the US, architects delegate. Industry standard contracts (AIA series) reflect that. MEP's ordinarily meet with Owners, Contractors, and Building Officials during design and construction of moderately sized and larger projects. That is unlikely to change very much very quickly. Contractual norms inform the insurance market. Contractual norms facilitate logistics. They inform project financing.
Low cost is appealing, but in the long run only if the service slots into the way people do business. MEP drawings are important as instruments of service not as physical objects. That's a much more complicated role than what PlanGrid tackled. It's product did not have to bear scrutiny from Owners, Building Officials or the Design Team. It only had to make the construction manager's job easier.
I think you didn't get it.
So,the design is as per that MEP consultant or designer only who is working on the project, but using this tool it will ease out his work by making the delivery more faster, efficient and detailed, thus cutting down his effort, time and he will be able to focus more on designing and providing quality to his customers.
If it works for you, we would be glad to connect with you and discuss and try to answer more of your questions and doubts.
Thanks!