Looking for sustainable income stream(s) preferably in online space to allow freedom of location and time. Currently in professional space trading time for money. Open to any niche that has the revenue potential of around 50k.
I think you need to think outside the box. You can definitely make 50k a month but someone just giving you ideas is not going to help you. Remember Ideas are just 1% execution is 99%. Find something you're passionate about. Find a problem that people have daily that can be solved.
But if you wan't ideas: E-Commerce is going to be really big over the net few years. Helping people increase their conversion rate will definitely make you over 50k a year if you can execute it right.
50k is definitely achievable but I wouldn't expect it overnight. Most people are using their "sweet spot" and turning that into a coaching or consulting business. You can surely do this and charge clients upwards of $600-$1200 or more per month residual income on contract for a 6-12 month program. It all depends on you and what problem you can solve, Getting into a niche you don't know much about will take you some time to learn and then you'll have to figure out what you can solve for clients that the next person can't. You can always do some research on niches with low competition but I would suggest working with what you know first, to get money flowing in, and then learning something different later on if that's what you choose to do.
Information products are the easiest and the quickest path to doing $50k/mo. Solve a real problem, find jv partners and affiliates, and launch your product. We recently launched a $25k/mo business ... all information and video training. Software is HARD.
If you can move people to action, it's achievable. Then everything becomes a lead generation game.
Find a company/friend who needs more customers, and you are in business.