Multiple Sites for same services - is It Hurt or Help SEO?

In India so many entrepreneurs has been suggested by their SEO experts to book more n more domains for their business, like domain.com, domain.org, domain.in domain.co.in etc, as they feel that if more than one site appeared on google for the same keywords than there is a big numbers of clicks their business can get, they are right as if only one site is their the click probability is 1 out of 10 but if 2,3 or 4 sites of same company ranking on 1st page than the probability will be 2 out of 10 or 3 out of 10 or 4 out of 10, so this concept is very fine .

How more than one site rank

SEO persons are sometime lives in a virtual paradise their they think they are able to ranking more than one site with the same efforts, but their is one official site that having a long and good history, and if some new sites they launched, those new sites also needs same time and great efforts to rank on search engine, [but if you have good team extra team than this experiment is very good for business] so need to give high focus on main site and can create some more sites start work on those side by side .

Is google loves more than one site?

Not sure! Google have not problem with your multiple domain or single domain, what every you like you can do, you can book and work on single domain or you can book 100 domain and work, you are free from Google's side, but Yes, google loves to show different domains on SERP in place of 2-3 URLs of same domain, so more than one site with unique content is always a better option for business, but you need to do very hard work to bring website on search .

Link your website with each others

Your brand is the credibility of your business, so do not merge it with the extra domains and site, just place a heading in the footer like our network and give links of each site, so that people get a message about the brand credibility, because so many times so many visitors leaves a site just because of unknown brand and have doubt about credibility.