I believe that the law says you must be allowed to change your energy provider if you wish, regardless of who owns the rights to the embedded network. That allows for healthy competition, but it only applies to power supplies.
If your developer has done a deal with, say, a ventilation company to install fans for your garage areas for free in exchange for promising to dupe the owners corp into a decades-long maintenance contract, then it is definitely NOT to the owners’ advantage.
The worst example I have heard of is a company installing storm water overflow tanks for free in exchange for a 99-year agreement that they would get the filter maintenance contract, with a guaranteed 5 per cent rise every year. Just to save you getting your calculators out, with the interest compounding a $5000 contract in year 1 would cost just under $8000 in year 10 – an increase of 60 per cent over 10 years.
Nice work if you can get it.