Thus, the way to better your odds at a profitable endeavor is to only do apps where you know something or have something that will take newcomers a long time to acquire or copy (trade secret sauce, enforceable patent, exclusive license, zillions of "followers", etc.), thus extending the time until your potential profits go to zero... assuming you are lucky enough to find any profits at all.
If you don't know something or have something unique, it's better to spend your time finding such before creating your apps.
Excellent point, while others are paying $10 for a "template game" that they reskin, others are focused on specific areas.
Look back at WordPerfect, they only did one thing, but they did a hellva job for that time, printer drivers were a huge problem back then, they wrote drivers for almost anything. IIRC, they were the only ones with a fax/modem driver back when those came out. Sadly Microsoft pushed hard to put them out of business by making Windows hard to write for.
Sadly, the good guys don't always win. BTW, Microsoft sucks.