I think this question Is very much wide and has got many answers in different business models and objective of every one is sales or conversions.
For example, an e-commerce company would want will have great number of sales and would want to promote online heavily over Facebook, google, etc. Their online budget would be fairly heavy than their off-line marketing budget.
L&T, they are in automobile sector and their heavy budgets would be on offline marketing and products.
So it completely depends on the client, agency is targeting , about the requirements of the client. But now a days after Digital India, almost everyone entering the online marketing or an existing business would need website development for sure.
This answer is written by DigitalFry’s founder Abhishek Garg himself and you can get in touch with him by clicking the contact us buttton.
Thanks and all the best!