Building a tool that manages your sales funnel? Sure, do it. A single pane of glass that shows your customers and your interactions with them? Sure! A place to have everyone's contact info? Of course!
By all means replace Salesforce, ACT, or whatever you're using for sales automation. The per-user, per-contact, and per-KB costs are outrageous and exist because sales people are dumb and lazy. You actually can do it better and for less, and theoretically integrate better with messaging platforms (Viber, whatsapp, etc).
Commercial software is hard because you have to deal with hundreds of thousands of use cases. When you're building software for your company, you can make it do exactly what you want. And the costs will probably be less than your salesforce license.
By all means replace Salesforce, ACT, or whatever you're using for sales automation. The per-user, per-contact, and per-KB costs are outrageous and exist because sales people are dumb and lazy. You actually can do it better and for less, and theoretically integrate better with messaging platforms (Viber, whatsapp, etc).
Commercial software is hard because you have to deal with hundreds of thousands of use cases. When you're building software for your company, you can make it do exactly what you want. And the costs will probably be less than your salesforce license.