If it can continue innovating (and I think it can), who knows what new innovations and entirely new businesses Tesla will create in the next 5-10 years. There is a foundation in place for potential Tesla AI, Tesla Flight and Tesla Media businesses if Tesla chooses to pursue them, and there could be others. I look forward to watching it all unfold.
Musk's focus on innovation instead of 'moats' give me confidence this will come true, check out 4min in: