#Mastodon needs to be the "town square". Anything owned by any one person/entity is not a "town square"
You DO NOT need #twitter. Companies can just set up their own server on #Mastodon and support #freespeech at a fraction of a cost.
Plenty of #freelancers (on platforms such as Fiverr, Guru, Upwork) and #volunteers out there who can help you for a very low price
Bonus: Your social presence need not be dependent on the mood of one person. Be completely free!