[PostOnce]

You can make more money in a five minute face to face conversation than you can in 6 months of internet marketing in some industries.

edit: example: one such industry is selling big expensive machines and/or software to run them.

[retcore]

But big expensive machines and software sales usually involves a lot of customer research and pre sales intelligence and rocking your sweet lone self (allowing you might be able to fake the roles and personalities necessary to mimic a remote team) to a enterprise closing meeting, isn't going forwards. Possibly you could look for interim executives from among the growing pool of experienced management exiled by industry ageism. But this(and my other suggestions) do require a broader professional ability. Enterprise software sales seems to have suffered something akin to job title inflation in IBs and start ups. And I can buy a lot of enterprise software directly online even in single digit seats. If you can do any of what I just pondered, almost certainly you're better off using your energies to hone your customer product fit, Steve Blank style or any which way.

The only thing I'll differentiate in my thinking from the OP advice is consider thoughtfully how well you are served by diarizing your development process and how much more can come from thinking in reverse from the customer perspective.