[oceanplexian]

"Building apps involves thinking about every bottleneck in advance and optimizing for every possible user scenario and a global user base, regardless if the number of users is only ~100."

I would advocate the exact opposite. If you need to scale to X users focus on making a great platform for X users, even if it’s only 100. If you try to over-engineer instead you’ll prematurely optimize and will make poor decisions that’ll come back to bite you when you actually DO need the scale and the requirements change.