There was a time when dot com domain names felt like the only possible option that would give your website a chance to appear in the SEO ranks at all. The truth is that this is completely obsolete now and any extension has the same chance of achieving success now.
The days when domain names alone had an effect on the SEO results are long gone. What matters today above all is the kind of content that you can create for your site and that is what truly supercharges your SEO.