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I don't think it's a problem as long as the pages are unique and have a purpose, a reason to exist. Don't just think about the keywords but what they mean to your visitors and how your visitors will progress through your site (hopefully all the way to your site goals/calls to action). I personally recommend having specific pages tailored around unique offerings that target the specific needs of different customers. (In this case personal vs corporate are very different needs and it'll be worth having content that talks to the customer) As I say, it's not the titles of the pages or the keywords that they target that'll mean they have less value to google - it's the quality of the content. Make sure you answer the visitors questions and give them what they're looking for! Make sure the "what's in it for me" is obvious... As long as the pages exist for a legitimate reason and deliver some value to your visitors/customers then I don't think you need to worry too much about being "penalized by google." Hope this helps!