Its a bad advice as per my experience, as a startup you'll have three problems cashflow, hiring, sales. Cash is your life blood, preserve it. Money you spent on

Its a bad advice as per my experience, as a startup you'll have three problems cashflow, hiring, sales. Cash is your life blood, preserve it. Money you spent on boxes can give you 3 months additional runway, what you spent on devops could have been an additional sales person. Hiring will be a pain, especially if you are competing with giants or millions of dollar valuation startups. One less person you have to hire is eons you can spend on other things. Sales/Marketing would suck, you would spend more on getting the deal then you will make from that in 2 years. Your first 10 ideas to make the app viral will fail. Your dev time not going in ops. can be used to squeeze in that feature, the big fat wallet is asking for. Don't worry about vendor lockin, React patents, green earth. 90% chance you'll die before you hit that, make that 99% if you are worrying about that. You'll anyway rewrite/rearch. the thing you are writing, as your understanding of market will improve.