Hiya, I've written some stuff about this. Hope it's helpful.
Don’t Form a Company https://blog.nugget.one/upstart/dont-form-a-company/
Debunking Some Conventional Startup Wisdom https://blog.nugget.one/upstart/thanks-for-the-advice-grandp...
Don’t Form a Company https://blog.nugget.one/upstart/dont-form-a-company/
Debunking Some Conventional Startup Wisdom https://blog.nugget.one/upstart/thanks-for-the-advice-grandp...
Why not a "parent" company you keep going indefinitely, spin off other entities as needed?
This all varies by jurisdiction of course, but last time I did something like this I filled out the paperwork myself and it cost a couple hundred only. Gets more complicated with more structure, etc. and any legal work you need - but you don't need to pay for that before it's justified.
you can set up your corp once, then present it as "doing-business-as" (DBA), depending on the jurisdiction, many times. I am not convinced that the above is good advice.
In fact, talking to a lawyer is probably better idea than picking up ideas from some blog.