Most likely? Unfortunately most people either don't care about software freedom, don't know about it, are actually scared of it, or just don't have the time or know how to switch. Couple that with the fact that Microsoft and Apple are determined to lock it down and the trend seems clear to me.
Ofc I would Love to be wrong, I just don't have much faith in people knowing or caring about what is in their best interest.
I live in an RV, which has a special toilet designed to use very little water.
I don't think it would work even if I could afford to retrofit my bathroom, as water pressure is often an issue when traveling.