It is the usage of your business idea that should be determining its success and not any investments into this.
You must stick with your idea of business, serving its users and any genuine investments shall be coming only after that. It is the usage of your idea that should be determining its success and not any investments into this. Startup for investments is the wrong approach.
Your idea of doing business must be disrupting any ongoing ways of doing things and that should become your domain so that when this disrupts any ongoing ways and the users come upon your web/app, money too comes following them. Therefore you must start by registering your idea as your own domain at first.
SANGKRIT.net runs a global registry for doing that. You may do so online at http://system.sangkrit.net and start developing with online support from system@sangkrit.net that is chargeable hourly per terminal. Opting for that kind of scalable way and freedom to pay nominally in monthly or annual terms or in just one go for two to ten years, you own your domain to stick with your idea of doing business without going deep into debt.
The largest success story of any startup is made around a domain that Mark Zuckerberg registered as his private property without bothering for anything else. Thereafter he simply started developing his domain and is doing so ceaselessly even after becoming the largest internet company around a domain.
Till now facebook.com has been the ideal example to startup in internet age. Whatsapp could have become the best example of smartphone stage of internet age but they lacked only that kind of courage to hold on independently.
Serial entrepreneurs are not dependable entrepreneurs since they startup for investments to move on. It is the second worst kind of approach in business. The first worst is the corporate kind of debt-ridden business luxury.
Your idea of doing business must be disrupting any ongoing ways of doing things and that should become your domain so that when this disrupts any ongoing ways and the users come upon your web/app, money too comes following them.