Your team is not careless about improvement. The homepage has been changed three times this year. The enquiry form was shortened because someone read that short forms convert more. The ad creative was swapped because sales said the leads felt weak. Every one of those changes was reasonable on the day it was made. The trouble is that they all happened in the same few weeks, traffic moved for its own reasons too, and now nobody can say which one helped. So the next argument about the funnel gets settled the way the last one was, by whoever speaks with the most conviction in the meeting.
Why it persists. Testing looks like a large-company activity. It sounds as though it needs heavy traffic, a specialist tool and a statistician, and most Indian SMBs have none of the three. So the funnel gets improved by redesign instead: everything changes at once, the result is judged by feel, and the exercise repeats a year later. The quieter truth is that a modest funnel can still be tested. It needs fewer tests, chosen more carefully, each one bold enough to show a difference.
If it stays unresolved. Spending grows faster than results, because the only lever anyone trusts is more traffic. Every rupee added at the top still has to pass through the same leaking steps. Over two or three years that becomes an acquisition cost your margins cannot carry, and a funnel nobody understands well enough to repair quickly when the market turns.